CN203054114U - Electric-stress-applying aging device for product of class of PXI bus digital meter - Google Patents
Electric-stress-applying aging device for product of class of PXI bus digital meter Download PDFInfo
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- CN203054114U CN203054114U CN 201220724392 CN201220724392U CN203054114U CN 203054114 U CN203054114 U CN 203054114U CN 201220724392 CN201220724392 CN 201220724392 CN 201220724392 U CN201220724392 U CN 201220724392U CN 203054114 U CN203054114 U CN 203054114U
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Abstract
The utility model provides an electric-stress-applying aging device for a product of a class of a PXI bus digital meter. The electric-stress-applying aging device for the product of the class of PXI bus digital meter includes a first PXI case equipped with the product of the class of the digital meter for aging tests and connected with a computer through a PXI controller; a second PXI case equipped with an aging device used for providing input signals for the product of the class of the digital meter for the aging tests and connected with the computer through the PXI controller; a signal transfer cable provided with one end connected with the aging device and the other end connected with the product of the class of the digital meter for the aging tests. By using the electric-stress-applying aging device for the product of the class of PXI bus digital meter, the automatic electric-stress-applying aging and the automatic testing of the product of the class of the PXI bus digital meter under a certain temperature in an aging testing link are realized. The efficiency is improved and the labor cost is reduced. Potential hazards are eliminated in an early stage of an aging process, and material cost and labor cost for maintenance and safeguard are reduced. The electric-stress-applying aging device for the product of the class of PXI bus digital meter has a good application prospect in the aging of the product of the class of PXI bus digital meter.
Description
Technical field
The utility model relates to the electronic equipment technical field of measurement and test, particularly relates to the ageing device that a kind of PXI number of buses word table series products adds electric stress.
Background technology
Along with the product integrated level is more and more higher, environment for use becomes increasingly complex, and reliability of products is required more to become strict.Based on this purpose, when requiring the deviser of product and the producer that product is provided, must carry out the aging test of product, could satisfy the user to the requirement of product reliability.
Aging test is a kind of test that applies temperature stress and electric stress at product, namely tests under certain temperature stress and electric stress condition; Its purpose is exactly to make the components and parts of test specimen obtain sufficient ageing by test specimen being applied suitable temperature stress and electric stress, and exposes the inefficacy in early stage of components and parts to greatest extent.
Existing needs add the PXI number of buses word table series products of electric stress aging test, and the device of use mainly contains:
1) participates in the experiment the quantity of object when single, only use computing machine, PXI cabinet and a kind of frock.The object of will participating in the experiment inserts cabinet, and to the object power supply of participating in the experiment, frock reaches the effect of most of circuit ageing to the object external signal of participating in the experiment by cabinet, adopts test automatically in the ageing process;
2) participate in the experiment object quantity more for a long time, use computing machine, many PXI cabinets, a plurality of frock.The object of will participating in the experiment links to each other one by one with frock, reaches the effect of most of circuit ageing of a plurality of objects of participating in the experiment, and adopts test automatically in the ageing process.
But traditional aging test is to power up under the unequal situation of stress time in each unit, adopts the mode of artificial on-line operation to carry out.This becomes the key factor that the puzzlement product improves reliability, mainly shows:
1) most enterprises adopt aging test also based on traditional mode;
Aging test is a production important step that ensures product reliability, and most enterprises still adopt multiple instruments add special-purpose single function instrument to the ageing product in addition stress carry out traditional aging test, cause each enterprise to have to spend the great amount of cost introducing equipment and increase human resources.
2) traditional aging test can not each assembly of elements burning-in period of motor-driven distribution;
Traditional aging test all is part of devices or the part unit instrument by various special uses to be added electric stress carry out.In all unequal participation work of parts in the cycle of whole ageing, this traditional ageing pattern has had a strong impact on usability and the life-span of part of devices and part unit.
3) the artificial On line inspection technology of traditional aging test employing can not effectively be rejected hidden danger device and parts;
Traditional ageing pattern is just utilized and manually is implemented in ray examination, at whole ageing test process artificial participation is arranged, and brings many uncertain factors.The working condition of monitoring ageing product that simultaneously can not be real-time, there are device and the parts of hidden danger in more difficult discovery.
4) data that record in entire test of traditional aging test are limited;
Traditional ageing pattern just by technician's record data in whole ageing process, has been brought the hard work amount to the tradesman, and the data of record are very limited.In case the ageing product breaks down, need person skilled to investigate and localization of fault from integral body, because the data of record are limited, also brought big difficulty for later stage failure mechanism analysis.
The utility model content
The technical problems to be solved in the utility model provides the ageing device that a kind of PXI number of buses word table series products adds electric stress, in order to solve the problems referred to above that prior art exists.
For solving the problems of the technologies described above, the utility model provides a kind of PXI number of buses word table series products to add the ageing device of electric stress, comprising:
The one PXI cabinet is equipped with the digital watch series products that carries out aging test, is connected with computing machine by the PXI controller;
The 2nd PXI cabinet is equipped with the ageing device that input signal is provided to the digital watch series products that carries out aging test, is connected with computing machine by the PXI controller;
The signal converting cable, an end is connected with ageing device, and the other end is connected with the digital watch series products that carries out aging test.
Further, described signal converting cable selects for use two ends to be all the fine copper cable of banana head.
Further, the output signal of described ageing device is two wires resistance signal, four-wire ohm signal and ac voltage signal.
Further, a plurality of described ageing devices are connected one by one with a plurality of digital watch series products that carry out aging test.
The utility model beneficial effect is as follows:
The utility model makes PXI number of buses word table series products realize adding the electric stress ageing automatically and testing automatically under the uniform temperature in the aging test link, raises the efficiency, and reduces human cost; This device improves the aging test level of PXI number of buses word table series products, in the ageing process, can reject potential risk in early days, make the device of digital watch series products in use more stable, prolong calibration cycle, thereby reduce and safeguard guarantee material cost and human cost, this device has very wide application prospect in PXI number of buses word table series products ageing.
Description of drawings
Fig. 1 is the structural representation that a kind of PXI number of buses word table series products adds the ageing device of electric stress among the utility model embodiment;
Fig. 2 is the ageing block diagram of digital watch series products among the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, does not limit the utility model.
The digital watch product generally has functions such as AC/DC voltage, AC/DC electric current, two line resistances, four-wire ohm, frequency measurement, for guaranteeing that each functional circuit all can realize adding electric stress in the ageing link, need analyze and in the ageing process, make electric signal covering function circuit as much as possible to the digital watch circuit.
The electric current of external resistor signal and constant current source output produces voltage during the two wires resistance test, actual is that the mode of testing DC voltage is come test resistance, and current signal has only had more a sampling resistor than voltage signal, remaining circuit all shares, and this sampling resistor has special ageing device so do not adding the electric stress ageing.So two line resistances can merge with DC voltage/current, alternating voltage can merge with alternating current.Because frequency signal has more a part of comparator circuit than ac voltage signal, so this gear can not merge ageing with the alternating voltage gear.So only two line resistances, four-wire ohm, alternating voltage and frequency gear being added electric stress during ageing gets final product.
The utility model proposes and a kind ofly add the electric stress ageing device for PXI number of buses word table series products, this device is interconnected by will participate in the experiment object and computing machine, PXI cabinet, PXI controller of signal converting cable, use ageing device to the object external signal of participating in the experiment, control by computing machine, realize adding automatically electric stress ageing and test automatically.
As shown in Figure 1, the utility model embodiment relates to the ageing device that a kind of PXI number of buses word table series products adds electric stress, comprising:
The one PXI cabinet is equipped with the digital watch series products that carries out aging test, is connected with computing machine by the PXI controller;
The 2nd PXI cabinet is equipped with the ageing device that input signal is provided to the digital watch series products that carries out aging test, is connected with computing machine by the PXI controller;
The signal converting cable, an end is connected with ageing device, and the other end is connected with the digital watch series products that carries out aging test.The signal converting cable selects for use two ends to be all the fine copper cable of banana head.
The one PXI cabinet and the 2nd PXI cabinet adopt the cabinet of main flow on the market, and the groove number can be according to decide by the quantity of ageing object, and it is to be that the object of participating in the experiment (carrying out the digital watch series products of aging test) and ageing device are powered that the PXI cabinet mainly acts on.
Ageing device is mainly the object input signal of participating in the experiment, and comprises the PXI bus interface circuit, function control circuit, electric resistance array, D/A output circuit, power circuit etc.Ageing device is controlled by the PXI controller based on the PXI bus; Required resistance and ac voltage signal when it can provide digital watch product ageing; Its signal that provides is connected to the digital watch series products by the signal converting cable.The output signal of ageing device can be divided into three kinds of two line resistances, four-wire ohm, alternating voltage according to the difference in functionality of digital watch series products.
The initialization of computer control product, control burning-in period, the gear of automatically switch ageing device and the object of participating in the experiment, record data etc., realize in the ageing process device based on the PXI bus being controlled automatically; The participate in the experiment initialization of object and ageing device of computer realization is carried out subsequent control to product; Computing machine is set up participate in the experiment object number and PXI bus duct contrast relationship in the PXI system; Whether namely participate in the experiment object, PXI bus duct number and the contrast relationship between the production code member of participating in the experiment by numbering being write the production code member hurdle, can clearly be judged between the three correct corresponding; In ageing, test and formation test form process, need to transfer this information simultaneously.
The ageing of digital watch series products is taked following mode: in digital watch series products input signal circuit, according to the characteristics of its input signal and input circuit, import different signals according to difference in functionality by ageing device within a certain period of time, and monitoring; The signal that applies satisfies the product input signal in rated range; Collection by controlling each passage and function, stop, realizing adding the ageing mode of electric stress.
Process is to the circuit analysis of digital watch series products and the research of test specification, as shown in Figure 2, the mimic channel of this series products mainly comprises data acquisition circuit, A/D change-over circuit, operational amplification circuit, analog signal conditioner circuit, constant-current source circuit, filtering circuit, AC/DC change-over circuit, comparator circuit etc.Test event generally comprises the test of product plug-and-play feature, alternating voltage test, frequency test, two wires resistance test, four-wire ohm test etc.When the test alternating voltage, the ageing circuit trend of the object of participating in the experiment: operational amplification circuit → AC/DC change-over circuit → A/D change-over circuit → data acquisition circuit; When test frequency, the ageing circuit of the object of participating in the experiment trend: operational amplification circuit → comparator circuit → data acquisition circuit; When test two line resistances, the object ageing circuit of participating in the experiment trend: constant-current source circuit → filtering circuit → analog signal conditioner circuit → A/D change-over circuit → data acquisition circuit; When the test four-wire ohm, the object ageing circuit of participating in the experiment trend: constant-current source circuit → analog signal conditioner circuit → A/D change-over circuit → data acquisition circuit.According to above analysis to digital watch series products circuit, can cover all circuit of downloading part except program.Can apply the component number M of electric stress ageing during the statistical computation ageing, with the total component number N of the object of participating in the experiment, then the ageing coverage rate is M/N * 100%.
According to the technical requirement of product, the circuit of ageing to be analyzed, the signal different to its input covers the circuit of product more than 85% to satisfy.The ageing signal that adopts should satisfy the ratings that product can be imported.The ageing signal of digital watch collection is uploaded to computing machine, and computing machine calculates the correctness of the ageing signal of monitoring, to judge the correctness of product ageing process.When actual ageing is tested, can suitably enlarge the test passes scope.But acceptability limit generally is no more than ageing device output error and digital watch Acquisition Error sum, the interference in the signals transmission is counted again, generally be no more than itself and 105%.
In the ageing process, by participate in the experiment each gear test duration of object of setting be C, total gear number of each function of object of participating in the experiment in the ageing process is S, a plurality of objects of participating in the experiment are tested simultaneously, can obtain once complete test period T=CS.The time that the circuit of each function, each gear distributes is T/NS, and N is the function number that product has.The preceding T/2NS time of each function gear circuit ageing is used for ageing, and the back T/2NS time is used for test.After finishing a test period, the data of the object of participating in the experiment of each groove correspondence are write the Excel form and carry out qualification determination; If test data all satisfies accuracy requirement, then can proceed the test of next cycle according to demand.
This device can realize that a plurality of products add the electric stress ageing simultaneously automatically, a plurality of ageing devices are connected one by one with a plurality of objects of participating in the experiment in the ageing process, when exporting certain signal by the computer control ageing device, control the test gear that the object of participating in the experiment switches to same signal.
This device is by the detection of computer realization to faults such as the device connection, test errors signal, the test index that occur in the ageing process are defective, and prompting, easy-to-look-up problem.
The utility model makes PXI number of buses word table series products realize adding the electric stress ageing automatically and testing automatically under the uniform temperature in the aging test link, raises the efficiency; Have ageing process monitoring, the fault function that reports an error, discharge the complex work that artificial process monitoring, artificial qualification are judged, the liberation human resources reduce human cost, raise the efficiency; A plurality of products add the electric stress ageing, further raise the efficiency; This device improves the aging test level of PXI number of buses word table series products, in the ageing process, can reject potential risk in early days, make the device of digital watch series products in use more stable, prolong calibration cycle, thereby reduce and safeguard guarantee material cost and human cost, this device has very wide application prospect in PXI number of buses word table series products ageing.
Although be the example purpose, preferred embodiment of the present utility model is disclosed, it also is possible those skilled in the art will recognize various improvement, increase and replacement, therefore, scope of the present utility model should be not limited to above-described embodiment.
Claims (4)
1. a PXI number of buses word table series products adds the ageing device of electric stress, it is characterized in that, comprising:
The one PXI cabinet is equipped with the digital watch series products that carries out aging test, is connected with computing machine by the PXI controller;
The 2nd PXI cabinet is equipped with the ageing device that input signal is provided to the digital watch series products that carries out aging test, is connected with computing machine by the PXI controller;
The signal converting cable, an end is connected with ageing device, and the other end is connected with the digital watch series products that carries out aging test.
2. PXI number of buses word table series products as claimed in claim 1 adds the ageing device of electric stress, it is characterized in that, described signal converting cable selects for use two ends to be all the fine copper cable of banana head.
3. PXI number of buses word table series products as claimed in claim 1 or 2 adds the ageing device of electric stress, it is characterized in that, the output signal of described ageing device is two wires resistance signal, four-wire ohm signal and ac voltage signal.
4. PXI number of buses word table series products as claimed in claim 3 adds the ageing device of electric stress, it is characterized in that, a plurality of described ageing devices are connected one by one with a plurality of digital watch series products that carry out aging test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220724392 CN203054114U (en) | 2012-12-25 | 2012-12-25 | Electric-stress-applying aging device for product of class of PXI bus digital meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220724392 CN203054114U (en) | 2012-12-25 | 2012-12-25 | Electric-stress-applying aging device for product of class of PXI bus digital meter |
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| Publication Number | Publication Date |
|---|---|
| CN203054114U true CN203054114U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220724392 Expired - Fee Related CN203054114U (en) | 2012-12-25 | 2012-12-25 | Electric-stress-applying aging device for product of class of PXI bus digital meter |
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| CN (1) | CN203054114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535951A (en) * | 2014-12-24 | 2015-04-22 | 北京航天测控技术有限公司 | Automatic detection device of digital meter |
-
2012
- 2012-12-25 CN CN 201220724392 patent/CN203054114U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535951A (en) * | 2014-12-24 | 2015-04-22 | 北京航天测控技术有限公司 | Automatic detection device of digital meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20171225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |