CN109061280A - It is a kind of for testing the Auto-Test System of electric current, voltage - Google Patents
It is a kind of for testing the Auto-Test System of electric current, voltage Download PDFInfo
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- CN109061280A CN109061280A CN201810816076.XA CN201810816076A CN109061280A CN 109061280 A CN109061280 A CN 109061280A CN 201810816076 A CN201810816076 A CN 201810816076A CN 109061280 A CN109061280 A CN 109061280A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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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
- G01R31/2851—Testing of integrated circuits [IC]
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- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The invention discloses a kind of for testing the Auto-Test System of electric current, voltage, including with communication function digital voltmeter and digital electronic ammeter, PC machine, matrix circuit plate, digital control card, RS485-RS232 converter, signal generator module, 220V turn 24V power module, power supply draws inclined module, data processing and memory module and master control borad.Auto-Test System of the invention can be completed to improve testing efficiency to the automatic test of the data such as the voltage, electric current, power of specific integrated circuit, saved testing cost, avoid mistake caused by human factor.
Description
Technical field
The present invention relates to the Auto-Test Systems of a kind of test electric current, voltage, belong to circuit testing technology field.
Background technique
In ic manufacturing process, test is to guarantee one of performance of integrated circuits, key means of quality.In recent years
Come, with the continuous increase of IC design scale, the continuous improvement of design method and high density technology it is universal
Using the integrated circuit dimensions nowadays produced are small and exquisite, powerful.Consequently also caused a unprecedented challenge, i.e., it is raw
Business men this how high efficiency low cost accurately tests these IC chips.
Currently, the method for test integrated circuit usually uses automatic test equipment or hand-operated simple test equipment.It should
Integrated circuit automatic testing machine mainly for detection of integrated circuit function integrality, with ensure integrated circuit manufacture product
Matter.But integrated circuit automatic testing equipment is monopolized by a small number of producers, and it is expensive, and use scope is than relatively limited.Especially
It is for the integrated circuit with specific function, general general conventional Auto-Test System is not able to satisfy its requirement.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of for testing the Auto-Test System of electric current, voltage, mentions
High testing efficiency, has saved testing cost, has avoided mistake caused by human factor.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
It is a kind of for testing the Auto-Test System of electric current, voltage, characterized in that including with communication function number electricity
Press table and digital electronic ammeter, PC machine, matrix circuit plate, digital control card, RS485-RS232 converter, signal generator module,
220V turns 24V power module, power supply draws inclined module, data processing and memory module and master control borad；
220V turns 24V power module and 220V AC power source is converted to 24V DC power supply for test macro use；
Power supply and draw inclined module when converting module high low bias test to be measured for above-mentioned 24V DC power supply required power supply and
Its positive and negative inclined power supply of drawing；
Signal generator module is used to generate the input signal of circuit under test needs；
By the LabVIEW software control digital control card installed in PC machine, pass through digital control card control matrix circuit
The on-off of switch matrix on plate realizes the on-off and switching of the input and output signal of circuit under test using switch matrix；
RS485-RS232 converter one end is connected to digital electronic ammeter/digital voltmeter, and the other end is connected to PC machine, leads to
The conversion for crossing RS485 Yu RS232 communication protocol communicates PC machine with digital electronic ammeter/digital voltmeter, completes to number
The data that ammeter/digital voltmeter measures are read out and handle；
Data processing and memory module are for handling the data that PC machine receives；
Master control borad is used to turn 220V 24V power module, power supply and draws inclined module, signal generator module, matrix circuit plate
Output signal carry out function interconnection, be supplied to circuit under test.
Signal generator module generate input signal by the switch matrix on matrix circuit plate be connected to master control borad or
It is directly connected to master control borad, then accesses circuit under test, the input signal as circuit under test.
The input signal that signal generator module generates includes clock signal, sine wave signal, pulse signal and modulated signal.
It is connected between digital control card and PC machine by USB interface.
RS485-RS232 converter is connect with PC machine by RS232 serial ports.
When data processing and memory module handle the data that PC machine receives, converted including the format to data,
Data calculate, lot data statisticallys analyze.
Include 3M zero insertion force socket for patching and fixing circuit under test on master control borad and is connect with peripheral equipment
Test interface socket.
It is also reserved with metrology and measurement probe points on master control borad, for carrying out periodic dosages and calibration to test macro, passes through
Metrology and measurement probe points test the accuracy of test macro function itself.
Advantageous effects of the invention:
The present invention devises a kind of Auto-Test System, can complete voltage, electric current, power etc. to specific integrated circuit
The automatic test of data, improves testing efficiency, has saved testing cost, avoids mistake caused by human factor.
Detailed description of the invention
Fig. 1 Auto-Test System functional block diagram；
Fig. 2 testing current schematic diagram；
Fig. 3 voltage tester schematic diagram；
Fig. 4 concrete function implementation flow chart.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
The present invention is a kind of circuit Auto-Test System, can be tested automatically specific function circuit, feature is
Test speed is fast, measuring accuracy is high, easy to operate.The system hardware mainly includes the digital voltmeter and number with communication function
Ammeter, PC machine, matrix circuit plate, digital control card, RS485-RS232 converter, signal generator module, 220V turn 24V electricity
Source module, power supply draw inclined module, data processing and memory module, master control borad.The test macro not only can be complete under nominal voltage
At test, moreover it is possible to automatically switch to drawing bias-voltage ± 10% (such as 15V+1.5V and 15V-1.5V) and carry out function survey to circuit
Examination.In order to guarantee the reliability of test macro itself, metrology and measurement probe points are also left on the master control borad of the test macro, it can
It is tested with the accuracy to test macro function itself.Concrete function block diagram is as shown in Figure 1.
220V turns 24V power module and 220V AC power source is converted to 24V DC power supply for test macro use.
Power supply and draw inclined module when converting module high low bias test to be measured for above-mentioned 24V DC power supply required power supply and
Its positive and negative inclined power supply of drawing.Such as: the power supply of circuit under test is 12V, and needs to do ± 5% electric power pulling bias testing for it, i.e.,
24V power supply is converted to 12V and 12V ± 0.6V by power adapter by the module, totally 3 road power supply.
The signal generator module of the test macro can generate the input letter that circuit under test needs by its write-in program
Number (such as: clock signal, sine wave signal, pulse signal, modulated signal etc.), is then connected to master by matrix circuit switching plate
Control plate is directly connected to master control borad, then accesses circuit under test, the input signal as circuit under test.
Then the LabVIEW software control digital control card installed by PC machine passes through digital control card control matrix electricity
The on-off of switch matrix on the plate of road realizes the on-off and switching of the input and output signal of circuit under test using switch matrix,
It is connected between digital control card and PC machine by USB interface.
RS485-RS232 converter one end is connected to digital current (voltage) table, and one end is connected to PC machine, passes through RS485
With the conversion of RS232 communication protocol, PC machine and digital current (voltage) table are communicated, completes to electric current (voltage)
The data that table measures are read out and handle.RS485-RS232 converter is connect with PC machine by RS232 serial ports.
Data processing and memory module, which are mainly responsible for, handles the data that PC machine receives, such as: the format of data
Conversion, data calculate, lot data statistical analysis, which simultaneously also can data save to treated.
The major function of master control borad is that (including 20V turns 24V power module, power supply and draws inclined module, signal to above-mentioned module
Generation module, matrix circuit plate) output signal carry out function interconnection, be provided to the circuit under test with specific function.
Master control borad mainly includes 3M zero insertion force socket, metrology and measurement point, the test interface socket connecting with peripheral equipment.Wherein:
(1), the function of 3M zero insertion force socket is to patch and fix circuit under test.
(2), metrology and measurement point is the major function exit of test macro, for test macro carry out periodic dosages and
There is the inaccurate test result for influencing circuit under test of inner parameter to prevent test macro in calibration.It is as follows to measure major function: first
By concatenating standard amperemeters on the loop of digital electronic ammeter, the current value of two ammeters is then compared, is met certain
The margin of tolerance in, indicate digital electronic ammeter it is accurate.Then it is tested by standard voltmeter in parallel with digital voltmeter, so
The voltage value for comparing two voltmeters afterwards, meets in certain margin of tolerance, indicates that digital voltmeter is accurate.Finally with external
Output supply voltage inside voltmeter test macro indicates that system power supply is qualified in the margin of tolerance.
2, connection type is specifically tested:
Step 1: test electric current:
The electric current (circuit static electric current) of module to be measured first read current Table A 1, A2 after powering on, at this time switch S1~S4,
S8 is disconnected, i.e., 2, the connection of 3 feet, S7, S5 closure, i.e., 1, the connection of 2 feet.Then it is closed S4, S8 (connection of 1,2 feet), reading S1, S2,
The corresponding reading of ammeter A3, the A4 of S3 under the combination of truth table 1.After test terminates, S1, S2, S3 are disconnected, S4, S8 closure.S1
~S5, S7, S8 is the switch unit on matrix circuit plate, and switch on and off passes through digital control card control.
Six tunnel Tu2Zhong is that power supply draws inclined module using LM317 as the circuit of core, output voltage be respectively 5V ± 0.1V,
5.25V±0.1V,4.75V±0.1V,16V±0.2V,16.8V±0.2V,15.2V±0.2V.Power conversion module will in Fig. 2
220V AC conversion is used at 24V DC voltage for test macro.
Circuit is installed on master control borad in dotted line frame in Fig. 2, and power supply is drawn except inclined module.
Above-mentioned functional test all passes through PC machine and controls digital control card, and then controls the on-off and utilization of matrix switch
PC machine reads the data of digital electronic ammeter by serial ports and RS232-RS485 converter to realize.
Truth table 1
Step 2: test voltage:
It is closed the signal (sine wave, square wave etc.) of S11 gating signal generation module output, switching S9, S10, S16 are (see true
Be worth table 2), it is every to switch a kind of state, by digital multimeter test 13,14,21,22 pin voltage of module to be measured, 13,
14,21,22 pin voltages are tested by matrix switch S12, S13, S14, S15 gate voltage table.All switches are in electricity in Fig. 4
Default disconnects when the electricity of road.Circuit in Fig. 3 in dotted line frame is placed on master control borad.Note: " closed " indicates in Fig. 3 and truth table 2
Switch 2,1 foot are connected, and "off" indicates that switch 3,2 feet are connected.
Above-mentioned functional test all passes through PC machine and controls digital control card, and then controls the on-off and utilization of matrix switch
PC machine reads the data of digital voltmeter by serial ports and RS232-RS485 converter to realize.
Truth table 2
Specific flow chart such as Fig. 4 that function is realized.
Claims (8)
1. a kind of for testing the Auto-Test System of electric current, voltage, characterized in that including the digital voltage with communication function
Table and digital electronic ammeter, PC machine, matrix circuit plate, digital control card, RS485-RS232 converter, signal generator module, 220V
Turn 24V power module, power supply draws inclined module, data processing and memory module and master control borad；
220V turns 24V power module and 220V AC power source is converted to 24V DC power supply for test macro use；
Power supply and draw inclined module when converting module high low bias test to be measured for above-mentioned 24V DC power supply required power supply and its
It is positive and negative to draw inclined power supply；
Signal generator module is used to generate the input signal of circuit under test needs；
By the LabVIEW software control digital control card installed in PC machine, by digital control card control matrix circuit plate
Switch matrix on-off, utilize switch matrix realize circuit under test input and output signal on-off and switching；
RS485-RS232 converter one end is connected to digital electronic ammeter/digital voltmeter, and the other end is connected to PC machine, passes through
The conversion of RS485 and RS232 communication protocol communicate PC machine with digital electronic ammeter/digital voltmeter, complete to digital electricity
The data that flow table/digital voltmeter measures are read out and handle；
Data processing and memory module are for handling the data that PC machine receives；
Master control borad be used to turn 220V 24V power module, power supply and draw inclined module, signal generator module, matrix circuit plate it is defeated
Signal carries out function interconnection out, is supplied to circuit under test.
2. according to claim 1 a kind of for testing the Auto-Test System of electric current, voltage, characterized in that signal produces
The input signal that raw module generates is connected to master control borad by the switch matrix on matrix circuit plate or is directly connected to master control
Plate, then circuit under test is accessed, the input signal as circuit under test.
3. according to claim 1 a kind of for testing the Auto-Test System of electric current, voltage, characterized in that signal produces
The input signal that raw module generates includes clock signal, sine wave signal, pulse signal and modulated signal.
4. according to claim 1 a kind of for testing the Auto-Test System of electric current, voltage, characterized in that number control
It is connected between fabrication and PC machine by USB interface.
5. according to claim 1 a kind of for testing the Auto-Test System of electric current, voltage, characterized in that RS485-
RS232 converter is connect with PC machine by RS232 serial ports.
6. according to claim 1 a kind of for testing the Auto-Test System of electric current, voltage, characterized in that at data
When reason and memory module handle the data that PC machine receives, calculated including the format conversion to data, data, batch number
It analyzes according to statistics.
7. according to claim 1 a kind of for testing the Auto-Test System of electric current, voltage, characterized in that master control borad
On include test interface socket for patching and fixing the 3M zero insertion force socket of circuit under test and connect with peripheral equipment.
8. according to claim 1 a kind of for testing the Auto-Test System of electric current, voltage, characterized in that master control borad
On be also reserved with metrology and measurement probe points, for carrying out periodic dosages and calibration to test macro, pass through metrology and measurement probe points
The accuracy of test macro function itself is tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810816076.XA CN109061280A (en) | 2018-07-24 | 2018-07-24 | It is a kind of for testing the Auto-Test System of electric current, voltage |
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| CN201810816076.XA CN109061280A (en) | 2018-07-24 | 2018-07-24 | It is a kind of for testing the Auto-Test System of electric current, voltage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782155A (en) * | 2019-03-13 | 2019-05-21 | 胜达克半导体科技(苏州)有限公司 | A kind of automatic test equipment and Auto-Test System |
| CN112133072A (en) * | 2020-09-23 | 2020-12-25 | 中国兵器工业集团第二一四研究所苏州研发中心 | Test system and test method for LoRa wireless data acquisition device |
| CN112345862A (en) * | 2020-11-05 | 2021-02-09 | 山东山大电力技术股份有限公司 | Test tool system and method for three-terminal isolation sampling module |
| CN114089169A (en) * | 2021-12-27 | 2022-02-25 | 上海菱沃铂智能技术有限公司 | Multifunctional integrated circuit experiment test equipment |
| CN114590212A (en) * | 2022-02-08 | 2022-06-07 | 南京司凯奇汽车科技有限公司 | Integrated circuit control system for heavy truck based on power assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782155A (en) * | 2019-03-13 | 2019-05-21 | 胜达克半导体科技(苏州)有限公司 | A kind of automatic test equipment and Auto-Test System |
| CN112133072A (en) * | 2020-09-23 | 2020-12-25 | 中国兵器工业集团第二一四研究所苏州研发中心 | Test system and test method for LoRa wireless data acquisition device |
| CN112345862A (en) * | 2020-11-05 | 2021-02-09 | 山东山大电力技术股份有限公司 | Test tool system and method for three-terminal isolation sampling module |
| CN114089169A (en) * | 2021-12-27 | 2022-02-25 | 上海菱沃铂智能技术有限公司 | Multifunctional integrated circuit experiment test equipment |
| CN114590212A (en) * | 2022-02-08 | 2022-06-07 | 南京司凯奇汽车科技有限公司 | Integrated circuit control system for heavy truck based on power assembly |
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Application publication date: 20181221 |