CN105675925A - Cascade fault injection interface adapter of single-stage switch suitable for electronic product - Google Patents
Cascade fault injection interface adapter of single-stage switch suitable for electronic product Download PDFInfo
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- CN105675925A CN105675925A CN201610037933.7A CN201610037933A CN105675925A CN 105675925 A CN105675925 A CN 105675925A CN 201610037933 A CN201610037933 A CN 201610037933A CN 105675925 A CN105675925 A CN 105675925A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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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
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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
- G01R31/003—Environmental or reliability tests
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to a cascade fault injection interface adapter of a single-stage switch suitable for an electronic product, and belongs to the field of test technology. The adapter comprises an interface assembly and a special cascade injection function module of the single-stage switch; one end of the interface assembly is connected with an interface of a fault injection platform, and the other end of the interface assembly is connected with a cascade adapter of the single-stage switch; a low-precision programmable resistor S4, a high-precision programmable resistor S5, a bridging capacitor C1 and a bridge diode D1 in the fault injection platform are selected to change the connection state, voltage drop, resistance load, capacitive load and inductive load between fault injection points of a tested object into preset fault values forcedly, physical quantities of corresponding fault injection are measured, and a program control switch of the fault injection platform or a manual switch in the special cascade injection function module of the single-stage switch is used to implement single-point grounding on the fault injection points of the tested object.
Description
Technical field
The present invention relates to a kind of single-stage switch cascading failure grouting socket adapter being applicable to electronic product, belong to testability technical field.
Background technology
Testability is the significant design characteristic that equipment is convenient to test and diagnose, and it has become the independent educational project important on an equal basis with reliability, maintainability, carries out testability designing technique research and has important learning value and engineering directive significance. In order to more accurately weigh, evaluate the testability design level of equipment under the prerequisite not damaging equipment, phase early 1970s, Failure Injection Technique is arisen at the historic moment, and develops rapidly in many decades, has become a kind of important technical carrying out product test and system verification. Failure Injection Technique is by injecting fault to tested exemplar artificially, it is achieved to the fault simulation of tested exemplar, thus obtain abundant fault data within the short period of time, accelerated test process. At present, the development trend of Failure Injection Technique is mainly divided into two directions: its one, the precision of direct fault location, semi-automation, safeization degree need to be improved further; Its two, the fault pattern kind of injection needs to be expanded further. Given this, the present invention is mainly for the direct fault location of the single-stage switch cascade class being most widely used in direct fault location, devise a interface adapter being specially adapted for single-stage switch compact cascade type direct fault location, from realizing angle accurate, convenient, Safety Injection, extend the range of application of single-stage switch compact cascade type Failure Injection Technique, to a kind of practical new way can be provided for the checking of equipment Test design with evaluating.
Summary of the invention
The object of the present invention: propose a kind of single-stage switch cascading failure grouting socket adapter being applicable to electronic product, its objective is to solve that current single-stage switch compact cascade type direct fault location controllability is low, risk is uncontrollable, complicated operation, the problem that mode is comparatively single.
The technical scheme of the present invention: a kind of single-stage switch cascading failure grouting socket adapter being applicable to electronic product, comprising:
Interface module, one end is connected with the interface of direct fault location platform, the other end is connected with unit switch cascade adapter, controllable resistor input terminus needed for low precision programmable resistance S4, the high-precision programmable resistance S5 in direct fault location platform is injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter is connected, and the input terminus measured needed for the digital multimeter in direct fault location platform, discrete oscilloscope, Digital Logic analyser are injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter is connected;And the input terminus of single-point ground connection is connected needed for again the programmed switch S1 in direct fault location platform, programmed switch S2, programmed switch S3 being injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter;
Accommodation function module is injected in single-stage switch cascade, select the low precision programmable resistance S4 in direct fault location platform, high-precision programmable resistance S5, bridge joint electric capacity C1, bridge diode D1 is to the connection state between the direct fault location point of tested object, pressure drop, resistive load, capacitive load, perception load carries out forcibly changing to fault preset value, and the physical quantity that corresponding failure is injected is measured, and by the manual switch in the programmed switch of direct fault location platform or single-stage switch cascade injection accommodation function module, the direct fault location point of tested object is carried out the operation of single-point ground connection.
Wherein, also comprise:
Universal test resource module, is connected with interface module, is DB9 standard network mouth interface or three axle common core cable interface or function jacks by the hardware resource in direct fault location platform from VPA interface conversion.
Wherein, single-stage switch cascade is injected accommodation function module and is comprised: the first tri-state switch K1, 2nd tri-state switch K2, 3rd tri-state switch K3, first double-pole singlethrow switch K4, 4th tri-state switch K5, 5th tri-state switch K6, 2nd double-pole single-throw (D.P.S.T.) K7, 6th tri-state switch K8, 7th tri-state switch K9, 3rd double-pole singlethrow switch K10, 8th tri-state switch K11, 9th tri-state switch K12, first single-pole single-throw(SPST K switch 13, 2nd single-pole single-throw(SPST K switch 14, 3rd single-pole single-throw(SPST K switch 15, 4th single-pole single-throw(SPST K switch 16, 5th single-pole single-throw(SPST K switch 17, 6th single-pole single-throw(SPST K switch 18, 7th single-pole single-throw(SPST K switch 19, 8th single-pole single-throw(SPST K switch 20, positive direct fault location point A1, negative direct fault location point B1,
The inboardend of the first tri-state switch K1 is connected to direct fault location point B1, the upper coupling end of the first tri-state switch K1 is connected with the right coupling end of programmed switch S1, the lower coupling end of the first tri-state switch K1 is connected with the right coupling end of the 6th single-pole single-throw(SPST K switch 18, the inboardend of the first single-pole single-throw(SPST K switch 13 is connected with direct fault location point A1 end, and the first right coupling end of single-pole single-throw(SPST K switch 13 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18; The inboardend of the 2nd single-pole single-throw(SPST K switch 14 is connected with the left coupling end of low precision program control resistance S4, and the right coupling end of the 2nd single-pole single-throw(SPST K switch 14 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18; The inboardend of the 3rd single-pole single-throw(SPST K switch 15 is connected with the left coupling end of high-precision program control resistance S5, and the right coupling end of the 3rd single-pole single-throw(SPST K switch 15 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18; The inboardend of the 4th single-pole single-throw(SPST K switch 16 is connected with the left coupling end of bridge joint electric capacity C1, and the right coupling end of the 4th single-pole single-throw(SPST K switch 16 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18; The inboardend of the 5th single-pole single-throw(SPST K switch 17 is connected with the left coupling end of bridge diode D1, and the right coupling end of the 5th single-pole single-throw(SPST K switch 17 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18;
First inboardend of the first double-pole singlethrow switch K4 is just being held with the plate card type digital multimeter of direct fault location platform by interface module and is being connected, 2nd inboardend of the first double-pole singlethrow switch K4 is connected with the plate card type digital multimeter negative terminal of direct fault location platform by interface module, first coupling end of the first double-pole singlethrow switch K4 is connected with the inboardend of the 4th tri-state switch K5, and the 2nd coupling end of the first double-pole singlethrow switch K4 is connected with the inboardend of the 5th tri-state switch K6;The upper coupling end of the 4th tri-state switch K5 is connected with positive direct fault location point A1, the lower coupling end of the 4th tri-state switch K5 is connected with negative direct fault location point B1, the upper coupling end of the 5th tri-state switch K6 is connected with negative direct fault location point B1, and the lower coupling end of the 5th tri-state switch K6 is introduced point with test product ground and is connected;
First inboardend of the 2nd double-pole singlethrow switch K7 is just being held with the plate card type oscilloscope of direct fault location platform by interface module and is being connected, 2nd inboardend of the 2nd double-pole singlethrow switch K7 is connected with the plate card type oscilloscope negative terminal of direct fault location platform by interface module, first coupling end of the 2nd double-pole singlethrow switch K7 is connected with the inboardend of the 6th tri-state switch K8, and the 2nd coupling end of the 2nd double-pole singlethrow switch K7 is connected with the inboardend of the 7th tri-state switch K9; The upper coupling end of the 6th tri-state switch K8 is connected with positive direct fault location point A1, the lower coupling end of the 6th tri-state switch K8 is connected with negative direct fault location point B1, the upper coupling end of the 7th tri-state switch K9 is connected with negative direct fault location point B1, and the lower coupling end of the 7th tri-state switch K9 is introduced point with test product ground and is connected;
First inboardend of the 3rd double-pole singlethrow switch K10 is just being held with the plate card type numerary signal measurement card of direct fault location platform by interface module and is being connected, 2nd inboardend of the 3rd double-pole singlethrow switch K10 is connected with the plate card type numerary signal measurement card negative terminal of direct fault location platform by interface module, first coupling end of the 3rd double-pole singlethrow switch K10 is connected with the inboardend of the 8th tri-state switch K11, and the 2nd coupling end of the 3rd double-pole singlethrow switch K10 is connected with the inboardend of the 9th tri-state switch K12; The upper coupling end of the 8th tri-state switch K11 is connected with positive direct fault location point A1, the lower coupling end of the 8th tri-state switch K11 is connected with negative direct fault location point B1, the upper coupling end of the 9th tri-state switch K12 is connected with negative direct fault location point B1, and the lower coupling end of the 9th tri-state switch K12 is introduced point with test product ground and is connected;
The inboardend of the 2nd single pole double throw switch K2 is connected with direct fault location point A1, the upper coupling end of the 2nd single pole double throw switch K2 is connected with the inboardend of the 7th single-pole single-throw(SPST K switch 19, the lower coupling end of the 2nd single pole double throw switch K2 is connected with the left coupling end of programmed switch S2, the left coupling end of the 7th single-pole single-throw(SPST K switch 19 is introduced point with test product ground and is connected, and the left coupling end of programmed switch S2 is introduced point with test product ground and is connected;
The inboardend of the 3rd single pole double throw switch K3 is connected with direct fault location point A1, the upper coupling end of the 3rd single pole double throw switch K3 is connected with the inboardend of the 8th single-pole single-throw(SPST K switch 20, the lower coupling end of the 3rd single pole double throw switch K3 is connected with the left coupling end of programmed switch S3, the left coupling end of the 8th single-pole single-throw(SPST K switch 20 is introduced point with test product ground and is connected, and the left coupling end of programmed switch S3 is introduced point with test product ground and is connected;
Positive direct fault location point A1 is connected with by the positive direct fault location point of measurement equipment, and negative direct fault location point B1 is connected with by the negative direct fault location point of measurement equipment.
Further, single-stage switch cascade is injected accommodation function module and is also comprised: positive fault test point A2 for subsequent use, A3, be connected with positive direct fault location point A1; Negative fault test point B2 for subsequent use, B3, be connected with negative direct fault location point B1.
The advantage of the present invention: the single-stage switch compact cascade type direct fault location in pin electronic product testability of the present invention test, it is proposed that a kind of adaptive device of the special direct fault location interface of single-stage switch compact cascade type. Operator uses this device can complete building of single-stage switch compact cascade type direct fault location environment within the short period of time, and " semi-automatic ", " manually " two kinds of Pattern completion single-stage switch compact cascade type direct fault location can be used, it is also possible in direct fault location process, realize the monitor in real time to direct fault location key parameter and record. Single-stage switch compact cascade type direct fault location is implemented, it is possible to greatly strengthen the controllability of single-stage switch compact cascade type direct fault location process, operate more convenient, efficient by this device.
Accompanying drawing illustrates:
Fig. 1 is the structure composition schematic diagram of the present invention;
Fig. 2 is the real work line schematic diagram of the present invention;
Fig. 3 is single-stage switch cascade injection module principle of work figure of the present invention;
Fig. 4 uses a kind of single-stage switch compact cascade type direct fault location interface adapter being applicable to electronic product of the present invention to carry out single-stage switch compact cascade type direct fault location schema.
In figure, nomenclature is as follows:
A1: positive direct fault location point
A2: positive fault test point 1 for subsequent use
A3: positive fault test point 2 for subsequent use
B1: negative direct fault location point
B2: negative fault test point 1 for subsequent use
B3: negative fault test point 2 for subsequent use
K1, K2, K3, K5, K6, K8, K9, K11, K12: tri-state switch
K13, K14, K15, K16, K17, K19, K20: single-pole single-throw(SPST switch
K4, K7, K10: double-pole singlethrow switch
NI4071: plate card type digital multimeter
AgilentM9012: plate card type oscilloscope
NI6552: plate card type numerary signal measurement card
Pickering40-584-001: programmed switch
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The single-stage switch cascading failure grouting socket adapter being applicable to electronic product, comprising:
Interface module, one end is connected with the interface of direct fault location platform, the other end is connected with unit switch cascade adapter, controllable resistor input terminus needed for low precision programmable resistance S4, the high-precision programmable resistance S5 in direct fault location platform is injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter is connected, and the input terminus measured needed for the digital multimeter in direct fault location platform, discrete oscilloscope, Digital Logic analyser are injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter is connected; And the input terminus of single-point ground connection is connected needed for again the programmed switch S1 in direct fault location platform, programmed switch S2, programmed switch S3 being injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter.
Accommodation function module is injected in single-stage switch cascade, select the low precision programmable resistance S4 in direct fault location platform, high-precision programmable resistance S5, bridge joint electric capacity C1, bridge diode D1 is to the connection state between the direct fault location point of tested object, pressure drop, resistive load, capacitive load, perception load carries out forcibly changing to fault preset value, and the physical quantity that corresponding failure is injected is measured, and by the manual switch in the programmed switch of direct fault location platform or single-stage switch cascade injection accommodation function module, the direct fault location point of tested object is carried out the operation of single-point ground connection.
Further, also comprise:
Universal test resource module, is connected with interface module, is DB9 standard network mouth interface or three axle common core cable interface or function jacks by the hardware resource in direct fault location platform from VPA interface conversion.
Concrete, single-stage switch cascade is injected accommodation function module and is comprised: the first tri-state switch K1, 2nd tri-state switch K2, 3rd tri-state switch K3, first double-pole singlethrow switch K4, 4th tri-state switch K5, 5th tri-state switch K6, 2nd double-pole single-throw (D.P.S.T.) K7, 6th tri-state switch K8, 7th tri-state switch K9, 3rd double-pole singlethrow switch K10, 8th tri-state switch K11, 9th tri-state switch K12, first single-pole single-throw(SPST K switch 13, 2nd single-pole single-throw(SPST K switch 14, 3rd single-pole single-throw(SPST K switch 15, 4th single-pole single-throw(SPST K switch 16, 5th single-pole single-throw(SPST K switch 17, 6th single-pole single-throw(SPST K switch 18, 7th single-pole single-throw(SPST K switch 19, 8th single-pole single-throw(SPST K switch 20, positive direct fault location point A1, negative direct fault location point B1,
The inboardend of the first tri-state switch K1 is connected to direct fault location point B1, the upper coupling end of the first tri-state switch K1 is connected with the right coupling end of programmed switch S1, the lower coupling end of the first tri-state switch K1 is connected with the right coupling end of the 6th single-pole single-throw(SPST K switch 18, the inboardend of the first single-pole single-throw(SPST K switch 13 is connected with direct fault location point A1 end, and the first right coupling end of single-pole single-throw(SPST K switch 13 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18. The inboardend of the 2nd single-pole single-throw(SPST K switch 14 is connected with the left coupling end of low precision program control resistance S4, and the right coupling end of the 2nd single-pole single-throw(SPST K switch 14 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18. The inboardend of the 3rd single-pole single-throw(SPST K switch 15 is connected with the left coupling end of high-precision program control resistance S5, and the right coupling end of the 3rd single-pole single-throw(SPST K switch 15 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18. The inboardend of the 4th single-pole single-throw(SPST K switch 16 is connected with the left coupling end of bridge joint electric capacity, and the right coupling end of the 4th single-pole single-throw(SPST K switch 16 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18. The inboardend of the 5th single-pole single-throw(SPST K switch 17 is connected with the left coupling end of bridge diode, and the right coupling end of the 5th single-pole single-throw(SPST K switch 17 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18.
First inboardend of the first double-pole singlethrow switch K4 is just being held with the plate card type digital multimeter of direct fault location platform by interface module and is being connected, 2nd inboardend of the first double-pole singlethrow switch K4 is connected with the plate card type digital multimeter negative terminal of direct fault location platform by interface module, first coupling end of the first double-pole singlethrow switch K4 is connected with the inboardend of the 4th tri-state switch K5, and the 2nd coupling end of the first double-pole singlethrow switch K4 is connected with the inboardend of the 5th tri-state switch K6; The upper coupling end of the 4th tri-state switch K5 is connected with positive direct fault location point A1, the lower coupling end of the 4th tri-state switch K5 is connected with negative direct fault location point B1, the upper coupling end of the 5th tri-state switch K6 is connected with negative direct fault location point B1, and the lower coupling end of the 5th tri-state switch K6 is introduced point with test product ground and is connected;
First inboardend of the 2nd double-pole singlethrow switch K7 is just being held with the plate card type oscilloscope of direct fault location platform by interface module and is being connected, 2nd inboardend of the 2nd double-pole singlethrow switch K7 is connected with the plate card type oscilloscope negative terminal of direct fault location platform by interface module, first coupling end of the 2nd double-pole singlethrow switch K7 is connected with the inboardend of the 6th tri-state switch K8, and the 2nd coupling end of the 2nd double-pole singlethrow switch K7 is connected with the inboardend of the 7th tri-state switch K9; The upper coupling end of the 6th tri-state switch K8 is connected with positive direct fault location point A1, the lower coupling end of the 6th tri-state switch K8 is connected with negative direct fault location point B1, the upper coupling end of the 7th tri-state switch K9 is connected with negative direct fault location point B1, and the lower coupling end of the 7th tri-state switch K9 is introduced point with test product ground and is connected;
First inboardend of the 3rd double-pole singlethrow switch K10 is just being held with the plate card type numerary signal measurement card of direct fault location platform by interface module and is being connected, 2nd inboardend of the 3rd double-pole singlethrow switch K10 is connected with the plate card type numerary signal measurement card negative terminal of direct fault location platform by interface module, first coupling end of the 3rd double-pole singlethrow switch K10 is connected with the inboardend of the 8th tri-state switch K11, and the 2nd coupling end of the 3rd double-pole singlethrow switch K10 is connected with the inboardend of the 9th tri-state switch K12;The upper coupling end of the 8th tri-state switch K11 is connected with positive direct fault location point A1, the lower coupling end of the 8th tri-state switch K11 is connected with negative direct fault location point B1, the upper coupling end of the 9th tri-state switch K12 is connected with negative direct fault location point B1, and the lower coupling end of the 9th tri-state switch K12 is introduced point with test product ground and is connected;
The inboardend of the 2nd single pole double throw switch K2 is connected with direct fault location point A1, the upper coupling end of the 2nd single pole double throw switch K2 is connected with the inboardend of the 7th single-pole single-throw(SPST K switch 19, the lower coupling end of the 2nd single pole double throw switch K2 is connected with the left coupling end of programmed switch S2, the left coupling end of the 7th single-pole single-throw(SPST K switch 19 is introduced point with test product ground and is connected, and the left coupling end of programmed switch S2 is introduced point with test product ground and is connected;
The inboardend of the 3rd single pole double throw switch K3 is connected with direct fault location point A1, the upper coupling end of the 3rd single pole double throw switch K3 is connected with the inboardend of the 8th single-pole single-throw(SPST K switch 20, the lower coupling end of the 3rd single pole double throw switch K3 is connected with the left coupling end of programmed switch S3, the left coupling end of the 8th single-pole single-throw(SPST K switch 20 is introduced point with test product ground and is connected, and the left coupling end of programmed switch S3 is introduced point with test product ground and is connected;
Positive direct fault location point A1 is connected with by the positive direct fault location point of measurement equipment, and negative direct fault location point B1 is connected with by the negative direct fault location point of measurement equipment.
As preferably, single-stage switch cascade is injected accommodation function module and is also comprised: positive fault test point A2 for subsequent use, A3, be connected with positive direct fault location point A1; Negative fault test point B2 for subsequent use, B3, be connected with negative direct fault location point B1.
Embodiment
Interface adapter is the important component part of test macro, and the signal that its main function has been the generic reception adapter end common test resource of tested object and test platform gathers and distribution, and it connects relation as shown in Figure 2. Wherein, the generic reception adapter end common test resource of test platform comprises switch, power supply, program control resistance etc. The universalization that interface adapter generally cannot realize each type direct fault location uses, it is necessary to the interface adapter apparatus special according to different direct fault location patten's design. Meanwhile, the designing and employing of interface adapter all needs to rely on certain molded test platform, by the test resource of this platform, completes direct fault location and other appointed functions.
As shown in Figure 1, a kind of single-stage switch cascading failure grouting socket adapter being applicable to electronic product of the present invention comprises interface module (1) and adapter casing (2) two portions.
1) interface module
Interface module (1) is for connecting direct fault location platform and adapter casing, it is achieved gathering and expansion of direct fault location platform hardware resource, ensures that electric, the physical property of signal after interface module is transferred do not change simultaneously. Designing owing to the present invention be directed to a ripe direct fault location platform based on PXI bus, therefore, the mechanical range of interface module, interface model, signal definition, physical dimension are all mated mutually with this direct fault location platform. The design of interface module possesses following feature:
I. in interface module, each connects the model of module, layout, distribution mate mutually with the direct fault location platform based on PXI bus;
Ii. interface module and add fixing apparatus based on being connected with between the direct fault location platform of PXI bus, to ensure the interface structure intensity of overall interface adapter;
Iii. the various types of signal exported after interface module is transferred electrically and physical property can not send out change obvious.
2) adapter casing
Adapter casing (2) is connected to the direct fault location platform based on PXI bus through interface module, and is gathered by interface module and be supplied to operator with the hardware resource expanded.By adapter casing, and in conjunction with upper computer software, operator can realize the physical operations of direct fault location platform hardware resource and single-stage switch compact cascade type direct fault location. Adapter casing, according to functional regional division, comprises single-stage switch cascade and injects special function district (3), universal test resource-area (4), expanding function district (5) three part.
I. special function district is injected in the cascade of single-stage switch
The function of tonic chord district that special function district is this direct fault location interface adapter is injected in single-stage switch cascade, is provided with two separate passages altogether, is passage A and channel B respectively. The direct fault location of direct or indirect (bridge resistance, electric capacity, the inductance) of manual and program control mode between two passes can be realized, thus change the electric attribute injecting point, it is achieved single-stage switch cascading failure injects. In addition, passage A and channel B also can realize the single-point earthing mode direct fault location of the manual and program control mode of single-point. Embedding PXI4071 plate, PXI6552 plate card and AgilentDSO6054 discrete oscilloscope interface in special function district are injected in single-stage switch cascade, it is possible to realize the monitoring of single-stage switch cascade signal in single-stage switch compact cascade type direct fault location process.
Injecting the situation of bridge resistance direct fault location between special function district passage A, B for single-stage switch cascade, the principle of work of these functional zone is described, schematic diagram is as shown in Figure 3. Direct fault location point A1, B1 are connected to the direct fault location point of tested object. Subsequently, tri-state switch K1 is allocated to upside, K14 closes, it is possible to realize the handing-over resistance mode direct fault location between two passages. Tri-state switch K2, K3 are allocated to respectively downside, can realize with the single-point earthing mode direct fault location of PC control. In addition, the action of tri-state switch K5, K6, K8, K9, K11, K12 is rationally set before direct fault location, it is possible to complete the real-time detecting & monitoring to direct fault location parameter. Wherein, the action of tri-state switch K5, K6, K8, K9, K11, K12 and the test function of correspondence thereof are as shown in form 1, form 2, form 3.
The combination of actions of form 1 tri-state switch K5, K6 table corresponding to test function
The combination of actions of form 2 tri-state switch K8, K9 table corresponding to test function
The combination of actions of form 3 tri-state switch K11, K12 table corresponding to test function
Ii. universal test resource-area
Universal test resource-area by interface module, the hardware test resource extraction of the direct fault location platform based on PXI bus is forwarded to adapter cabinet panel to be formed. In universal test resource-area, draw 12 class hardware test resources altogether, comprising: 422 buses, 429 buses, 1153 buses, CAN, 422 buses, AFDX bus, I/O interface, AgilentDSO6054 plate card, AgilentM9210A plate card.
Iii. expanding function district
The function in expanding function district is similar to bread plate, and operator can utilize the functions such as the expanding function district combing completing to test the building of middle-size and small-size support circuit, measurement circuit.
3) based on the fault filling method of a kind of single-stage switch compact cascade type direct fault location interface adapter being applicable to electronic product
Based on a kind of single-stage switch compact cascade type direct fault location interface adapter being applicable to electronic product of the present invention fault filling method as shown in Figure 4, the concrete steps of the method are as follows:
Step 1: open direct fault location platform, single-stage switch compact cascade type direct fault location adapter is connected to direct fault location platform.
Step 2: carry out single-stage switch compact cascade type direct fault location mode on adapter casing and the setting with test resource is set. Wherein, direct fault location mode comprises single passage and injects and inject with two channels, and semi-automatic injection and person manually inject. Comprise following two sub-steps:
Step 21: according to the single-stage switch compact cascade type direct fault location practical situation to be carried out and demand, arranging accordingly on adapter casing, the content of setting is the state arranging K switch 1, K2, K3.
Step 22: according to practical situation and the demand that to be carried out testability, is arranged accordingly on adapter casing, and the content of setting is arrange K switch 5, the state of K6, K8, K9, K11, K12 and the state of double-pole singlethrow switch K4, K7, K10.
Step 3: stress and the stress injection mode arranging single-stage switch compact cascade type direct fault location on direct fault location platform software operation interface, stress injection mode comprises injecting continuously to be injected with interval.
Step 4: according to single-stage switch compact cascade type direct fault location mode, study subject is connected with direct fault location point;
Step 5: perform direct fault location, runs upper computer software, according to the setting of step 2 and 3, tested exemplar is carried out direct fault location operation. If semi-automatic injection way, then needing to complete direct fault location operation according to the physical quantity that need to inject by the mode of manual tumbler switch K13, K14, K15, K16, K17, the beginning of direct fault location is operated by time variable control with terminating; If manual injection way, it is necessary to tumbler switch K18 manually, complete direct fault location operation according to the physical quantity that need to inject by the mode of manual tumbler switch K13, K14, K15, K16, K17 more subsequently.
Step 6: whether failure judgement is injected successful, comprises following two sub-steps:
Step 61: if direct fault location success, then terminate this test use-case operation.
Step 62: if direct fault location is unsuccessful, then return step 3, and change is arranged and parameter, again carries out direct fault location operation under new setting model.
Claims (4)
1. one kind is applicable to the single-stage switch cascading failure grouting socket adapter of electronic product, it is characterised in that, comprising:
Interface module, one end is connected with the interface of direct fault location platform, the other end is connected with unit switch cascade adapter, controllable resistor input terminus needed for low precision programmable resistance S4, the high-precision programmable resistance S5 in direct fault location platform is injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter is connected, and the input terminus measured needed for the digital multimeter in direct fault location platform, discrete oscilloscope, Digital Logic analyser are injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter is connected; And the input terminus of single-point ground connection is connected needed for again the programmed switch S1 in direct fault location platform, programmed switch S2, programmed switch S3 being injected accommodation function module with single-stage switch cascade in single-stage switch cascade adapter;
Accommodation function module is injected in single-stage switch cascade, select the low precision programmable resistance S4 in direct fault location platform, high-precision programmable resistance S5, bridge joint electric capacity C1, bridge diode D1 is to the connection state between the direct fault location point of tested object, pressure drop, resistive load, capacitive load, perception load carries out forcibly changing to fault preset value, and the physical quantity that corresponding failure is injected is measured, and by the manual switch in the programmed switch of direct fault location platform or single-stage switch cascade injection accommodation function module, the direct fault location point of tested object is carried out the operation of single-point ground connection.
2. a kind of single-stage switch cascading failure grouting socket adapter being applicable to electronic product as claimed in claim 1, it is characterised in that, also comprise:
Universal test resource module, is connected with interface module, is DB9 standard network mouth interface or three axle common core cable interface or function jacks by the hardware resource in direct fault location platform from VPA interface conversion.
3. a kind of single-stage switch cascading failure grouting socket adapter being applicable to electronic product as claimed in claim 1, it is characterised in that,
Single-stage switch cascade is injected accommodation function module and is comprised: the first tri-state switch K1, 2nd tri-state switch K2, 3rd tri-state switch K3, first double-pole singlethrow switch K4, 4th tri-state switch K5, 5th tri-state switch K6, 2nd double-pole single-throw (D.P.S.T.) K7, 6th tri-state switch K8, 7th tri-state switch K9, 3rd double-pole singlethrow switch K10, 8th tri-state switch K11, 9th tri-state switch K12, first single-pole single-throw(SPST K switch 13, 2nd single-pole single-throw(SPST K switch 14, 3rd single-pole single-throw(SPST K switch 15, 4th single-pole single-throw(SPST K switch 16, 5th single-pole single-throw(SPST K switch 17, 6th single-pole single-throw(SPST K switch 18, 7th single-pole single-throw(SPST K switch 19, 8th single-pole single-throw(SPST K switch 20, positive direct fault location point A1, negative direct fault location point B1,
The inboardend of the first tri-state switch K1 is connected to direct fault location point B1, the upper coupling end of the first tri-state switch K1 is connected with the right coupling end of programmed switch S1, the lower coupling end of the first tri-state switch K1 is connected with the right coupling end of the 6th single-pole single-throw(SPST K switch 18, the inboardend of the first single-pole single-throw(SPST K switch 13 is connected with direct fault location point A1 end, and the first right coupling end of single-pole single-throw(SPST K switch 13 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18; The inboardend of the 2nd single-pole single-throw(SPST K switch 14 is connected with the left coupling end of low precision program control resistance S4, and the right coupling end of the 2nd single-pole single-throw(SPST K switch 14 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18; The inboardend of the 3rd single-pole single-throw(SPST K switch 15 is connected with the left coupling end of high-precision program control resistance S5, and the right coupling end of the 3rd single-pole single-throw(SPST K switch 15 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18; The inboardend of the 4th single-pole single-throw(SPST K switch 16 is connected with the left coupling end of bridge joint electric capacity C1, and the right coupling end of the 4th single-pole single-throw(SPST K switch 16 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18; The inboardend of the 5th single-pole single-throw(SPST K switch 17 is connected with the left coupling end of bridge diode D1, and the right coupling end of the 5th single-pole single-throw(SPST K switch 17 is connected with the left coupling end of programmed switch S1 with the 6th single-pole single-throw(SPST K switch 18;
First inboardend of the first double-pole singlethrow switch K4 is just being held with the plate card type digital multimeter of direct fault location platform by interface module and is being connected, 2nd inboardend of the first double-pole singlethrow switch K4 is connected with the plate card type digital multimeter negative terminal of direct fault location platform by interface module, first coupling end of the first double-pole singlethrow switch K4 is connected with the inboardend of the 4th tri-state switch K5, and the 2nd coupling end of the first double-pole singlethrow switch K4 is connected with the inboardend of the 5th tri-state switch K6; The upper coupling end of the 4th tri-state switch K5 is connected with positive direct fault location point A1, the lower coupling end of the 4th tri-state switch K5 is connected with negative direct fault location point B1, the upper coupling end of the 5th tri-state switch K6 is connected with negative direct fault location point B1, and the lower coupling end of the 5th tri-state switch K6 is introduced point with test product ground and is connected;
First inboardend of the 2nd double-pole singlethrow switch K7 is just being held with the plate card type oscilloscope of direct fault location platform by interface module and is being connected, 2nd inboardend of the 2nd double-pole singlethrow switch K7 is connected with the plate card type oscilloscope negative terminal of direct fault location platform by interface module, first coupling end of the 2nd double-pole singlethrow switch K7 is connected with the inboardend of the 6th tri-state switch K8, and the 2nd coupling end of the 2nd double-pole singlethrow switch K7 is connected with the inboardend of the 7th tri-state switch K9; The upper coupling end of the 6th tri-state switch K8 is connected with positive direct fault location point A1, the lower coupling end of the 6th tri-state switch K8 is connected with negative direct fault location point B1, the upper coupling end of the 7th tri-state switch K9 is connected with negative direct fault location point B1, and the lower coupling end of the 7th tri-state switch K9 is introduced point with test product ground and is connected;
First inboardend of the 3rd double-pole singlethrow switch K10 is just being held with the plate card type numerary signal measurement card of direct fault location platform by interface module and is being connected, 2nd inboardend of the 3rd double-pole singlethrow switch K10 is connected with the plate card type numerary signal measurement card negative terminal of direct fault location platform by interface module, first coupling end of the 3rd double-pole singlethrow switch K10 is connected with the inboardend of the 8th tri-state switch K11, and the 2nd coupling end of the 3rd double-pole singlethrow switch K10 is connected with the inboardend of the 9th tri-state switch K12; The upper coupling end of the 8th tri-state switch K11 is connected with positive direct fault location point A1, the lower coupling end of the 8th tri-state switch K11 is connected with negative direct fault location point B1, the upper coupling end of the 9th tri-state switch K12 is connected with negative direct fault location point B1, and the lower coupling end of the 9th tri-state switch K12 is introduced point with test product ground and is connected;
The inboardend of the 2nd single pole double throw switch K2 is connected with direct fault location point A1, the upper coupling end of the 2nd single pole double throw switch K2 is connected with the inboardend of the 7th single-pole single-throw(SPST K switch 19, the lower coupling end of the 2nd single pole double throw switch K2 is connected with the left coupling end of programmed switch S2, the left coupling end of the 7th single-pole single-throw(SPST K switch 19 is introduced point with test product ground and is connected, and the left coupling end of programmed switch S2 is introduced point with test product ground and is connected;
The inboardend of the 3rd single pole double throw switch K3 is connected with direct fault location point A1, the upper coupling end of the 3rd single pole double throw switch K3 is connected with the inboardend of the 8th single-pole single-throw(SPST K switch 20, the lower coupling end of the 3rd single pole double throw switch K3 is connected with the left coupling end of programmed switch S3, the left coupling end of the 8th single-pole single-throw(SPST K switch 20 is introduced point with test product ground and is connected, and the left coupling end of programmed switch S3 is introduced point with test product ground and is connected;
Positive direct fault location point A1 is connected with by the positive direct fault location point of measurement equipment, and negative direct fault location point B1 is connected with by the negative direct fault location point of measurement equipment.
4. a kind of single-stage switch cascading failure grouting socket adapter being applicable to electronic product as claimed in claim 1, it is characterized in that, single-stage switch cascade is injected accommodation function module and is also comprised: positive fault test point A2 for subsequent use, A3, be connected with positive direct fault location point A1; Negative fault test point B2 for subsequent use, B3, be connected with negative direct fault location point B1.
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| CN201610037933.7A CN105675925B (en) | 2016-01-20 | 2016-01-20 | A kind of Mono-pole switch cascading failure grouting socket adapter suitable for electronic product |
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