CN203178372U - Electrostatic decay time tester having circuit detection device - Google Patents
Electrostatic decay time tester having circuit detection device Download PDFInfo
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- CN203178372U CN203178372U CN 201320031744 CN201320031744U CN203178372U CN 203178372 U CN203178372 U CN 203178372U CN 201320031744 CN201320031744 CN 201320031744 CN 201320031744 U CN201320031744 U CN 201320031744U CN 203178372 U CN203178372 U CN 203178372U
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Abstract
The utility model discloses an electrostatic decay time tester having a circuit detection device. The electrostatic decay time tester consists of a single-chip microcomputer, a stabilized high-voltage source, an electrostatic electrifying device, a non-contact type electrostatic potential sensor, a signal amplifying circuit, an A/D converter, the circuit detection device, a keyboard, and a display, wherein the electrostatic electrifying device comprises a charging method device, a corona power spray device, and a friction method device; the single-chip microcomputer is connected with the stabilized high-voltage source; the stabilized high-voltage source is connected with the electrostatic electrifying device, and supplies power to the charging method device and the corona power spray device; the non-contact type electrostatic potential sensor is connected with the signal amplifying circuit; the signal amplifying circuit is connected with the A/D converter; and the A/D converter transmits digital signals to the single-chip microcomputer. The electrostatic decay time tester combines three methods-a corona power spray method, a charging method, and a friction method-into a whole, thereby facilitating with the comprehensive assessment of the electrostatic performance of a to-be-tested sample and more reasonably and truthfully reflecting the electrostatic decay characteristics of a to-be-tested-material.
Description
Technical field
The utility model relates to a kind of tester, particularly a kind of electrostatic attenuation time test instrument that can carry out the charged road pick-up unit of electrostatic test to various materials under complex environment.
Background technology
The electrostatic attenuation time constant is to weigh the important physical amount of antistatic material performance, is very important to the measurement of electrostatic attenuation time constant for the control electrostatic hazard.Differentiate the influence degree of static in the production run, check electrostatic defending product, the electrostatic discharge simulation test of estimating the antistatic countermeasure effect and taking place to carry out after the static discharge harm all needs measurement of electrostatic and related parameter is arranged.The electrostatic attenuation time measurement is by making tested sample charged after stablize the initial potential value someway, remove the electrostatic generator that acts on tested sample, then with tested sample ground connection, make it begin discharge, utilize monitoring system to measure the time dependent deamplification of tested sample surface electrostatic current potential in real time simultaneously, calculate electric charge and be reduced to the die-away time of setting the termination current potential, and estimate the antistatic performance of measured material on this basis.The measuring method of existing electrostatic attenuation time mainly is divided into corona spray electrical method, mise-a-la-masse method and rubbing manipulation 3 classes according to the difference of charged mode under measured material structure and the actual environment.At present, electrostatic charge die-away test instrument kind on the market is more various, but it is a kind of that the charged mode of tested sample is had only, and can only be used for estimating the antistatic property under a certain class formation material or a certain charged mode, and function is generally single.
The utility model content
The technical problems to be solved in the utility model provides a kind of electrostatic attenuation time test instrument of charged road pick-up unit of the material electrostatic attenuation time constant that can measure three kinds of charged modes simultaneously.
For solving the problems of the technologies described above, the utility model has adopted the electrostatic attenuation time test instrument of a kind of charged road pick-up unit, comprise single-chip microcomputer, stable high voltage source, electrostatic electrification device, contactless electrostatic potential sensor, signal amplification circuit, A/D converter, circuit checker, keyboard and display, described electrostatic electrification device comprises mise-a-la-masse method device, corona spray electric installation and rubbing manipulation device; Described circuit checker comprises contact modules, both positive and negative polarity detection module and voltage strength detection module, described contact modules comprises two contact pins, described contact pin contacts positive pole and the negative pole of circuit to be detected respectively, described both positive and negative polarity detection module is connected with described contact modules, described voltage strength detection module is connected with described contact modules, and described voltage strength grade is corresponding with default range of voltage values; Described single-chip microcomputer connects the stable high voltage source, and the stable high voltage source is connected with the electrostatic electrification device, is mise-a-la-masse method device and the power supply of corona spray electric installation; Contactless electrostatic potential sensor connects signal amplification circuit, and described signal amplification circuit connects A/D converter, and A/D converter is delivered to single-chip microcomputer with digital signal.
The beneficial effect that the utlity model has: three kinds of methods such as the dizzy spray of the electrostatic attenuation time test instrument current collection of this charged road pick-up unit electrical method, mise-a-la-masse method, rubbing manipulation are one, be convenient to the antistatic property of thoroughly evaluating tested sample, can reflect the electrostatic attenuation characteristic of measured material more reasonable, more realistically.
Description of drawings
Fig. 1 is system architecture diagram of the present utility model.
Embodiment
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, describe most preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing, the utility model is limited.
As shown in Figure 1, the electrostatic attenuation time test instrument of this charged road pick-up unit, comprise single-chip microcomputer 3, stable high voltage source 4, electrostatic electrification device, contactless electrostatic potential sensor 5, signal amplification circuit 11, A/D converter 10, circuit checker 9, keyboard 1 and display 2, described electrostatic electrification device comprises mise-a-la-masse method device 6, corona spray electric installation 7 and rubbing manipulation device 8; Described circuit checker 9 comprises contact modules, both positive and negative polarity detection module and voltage strength detection module, described contact modules comprises two contact pins, described contact pin contacts positive pole and the negative pole of circuit to be detected respectively, described both positive and negative polarity detection module is connected with described contact modules, described voltage strength detection module is connected with described contact modules, and described voltage strength grade is corresponding with default range of voltage values; Described single-chip microcomputer 3 connects stable high voltage source 4, and stable high voltage source 4 is connected with the electrostatic electrification device, is mise-a-la- masse method device 6 and 7 power supplies of corona spray electric installation; Contactless electrostatic potential sensor 5 connects signal amplification circuit 11, and described signal amplification circuit 11 connects A/D converter 10, and A/D converter 10 is delivered to single-chip microcomputer 3 with digital signal.
The charge decay time measurement is to make tested sample charged after stablize initial electrostatic voltage by mise-a-la-masse method, corona spray electrical method or rubbing manipulation, remove the electrostatic generator that acts on tested sample, then the rapid ground connection of tested sample is made it begin discharge, utilize simultaneously with the single-chip microcomputer is that the monitoring system of core is measured the time dependent deamplification of tested sample surface electrostatic current potential in real time, calculate electric charge and be reduced to the die-away time of setting the termination current potential, and estimate the antistatic performance of measured material on this basis.
The Timer function that the measurement of charge decay time can utilize single-chip microcomputer to carry realizes, need only instantaneous the picking up counting that makes single-chip microcomputer begin to decay from initial voltage at measured material by programming, when decaying to the setting final voltage, stop timing immediately, just can obtain the electrostatic charge die-away time of measured material more accurately.Its gordian technique is accurately to measure in real time measured material electrostatic potential value, and changes into digital signal by the defeated people's passage of single-chip computer control system and deliver to the single-chip microcomputer terminal, the moment of the interrupt response of control Timer.Electrostatic attenuation time test instrument can be measured the electrostatic attenuation time constant of measured material automatically, and this comprises the half life period, discharge time constant and the time that decays to another magnitude of voltage from a certain setting voltage value.When using corona spray electrical method and mise-a-la-masse method to measure, all need-the adjustable stable high voltage direct supply of 7～7kV sprays electricity or charging to measured material, even but in fact be met the high-voltage power supply of condition, the electrostatic potential that measured material is obtained is all on the low side than actual value, such as in corona spray electrical method, measuring measured material decays to lkV from 5kV time, utilize 5kV stable high voltage DC voltage to make material charged by the spray electric installation, when the material surface current potential no longer rises, its actual institute static electrification current potential only about 3. 5kV, this will inevitably cause to survey the electrostatic attenuation time constant on the low side.Solution is that the higher high-voltage power supply of choose reasonable is charged to measured material, after the time, makes the measured material surface potential greater than desired initial electrostatic magnitude of voltage through long enough.When finishing, charged process utilize the reception measure portion to monitor the material surface potential value in real time immediately, when reaching the initial electrostatic voltage conditions, open the single-chip microcomputer clocking capability immediately and continue potential decay state in the monitoring material static discharge process, so just can really realize measured material from initial voltage to the final voltage measurement function of die-away time.
Multi-functional electrostatic attenuation tester is core component with the AT89C51 single-chip microcomputer, and single-chip microcomputer is standard control high-voltage power supply, mise-a-la-masse method device and the power supply of corona spray electric installation by the initial value of keyboard input.Tested sample is charged to certain potentials, presses the feeler switch position and will control plant equipment and make high-voltage power supply close and make tested sample ground connection, starts A/D converter with elbow.Then, utilize contactless electrostatic transducer directly to measure tested sample by 3 kinds of charged mode gained electrostatic potentials, with the electrostatic attenuation signal on the measured material amplify, processing such as filtering, convert the digital signal that single-chip microcomputer can identify to through A/D and deliver to the single-chip microcomputer terminal.Single-chip microcomputer cooperate corresponding program will received signal and the parameter imported of keyboard compare, allow steering logic unit judges and control closing of timer.At last, demonstrate the electrostatic attenuation time that records by light-emitting diode display, thereby realize the function of charge decay time tester.
3 kinds of methods such as the dizzy spray of the electrostatic attenuation time test instrument current collection of this charged road pick-up unit electrical method, mise-a-la-masse method, rubbing manipulation are one, are convenient to the antistatic property of thoroughly evaluating tested sample, have overcome the deficiency of existing surveying instrument.This tester can be by the correlativity of the electrostatic attenuation time constant of the different tested sample of research under 3 kinds of charged modes, analyze the applicable object of every kind of method of testing theoretically, for electrostatic attenuation characteristic more reasonable, that reflect measured material more realistically provides technical basis.
The above embodiment only is used for illustrating the utility model, but is not limited thereto.Under the condition that does not depart from the utility model design, affiliated technical field personnel can make suitable change adjustment, and these change adjustment also should be included within the claim protection domain of the present utility model.
Claims (1)
1. the electrostatic attenuation time test instrument of a charged road pick-up unit, it is characterized in that: comprise single-chip microcomputer, stable high voltage source, electrostatic electrification device, contactless electrostatic potential sensor, signal amplification circuit, A/D converter, circuit checker, keyboard and display, described electrostatic electrification device comprises mise-a-la-masse method device, corona spray electric installation and rubbing manipulation device; Described circuit checker comprises contact modules, both positive and negative polarity detection module and voltage strength detection module, described contact modules comprises two contact pins, described contact pin contacts positive pole and the negative pole of circuit to be detected respectively, described both positive and negative polarity detection module is connected with described contact modules, described voltage strength detection module is connected with described contact modules, and described voltage strength grade is corresponding with default range of voltage values; Described single-chip microcomputer connects the stable high voltage source, and the stable high voltage source is connected with the electrostatic electrification device, is mise-a-la-masse method device and the power supply of corona spray electric installation; Contactless electrostatic potential sensor connects signal amplification circuit, and described signal amplification circuit connects A/D converter, and A/D converter is delivered to single-chip microcomputer with digital signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031744 CN203178372U (en) | 2013-01-22 | 2013-01-22 | Electrostatic decay time tester having circuit detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031744 CN203178372U (en) | 2013-01-22 | 2013-01-22 | Electrostatic decay time tester having circuit detection device |
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| CN203178372U true CN203178372U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320031744 Expired - Fee Related CN203178372U (en) | 2013-01-22 | 2013-01-22 | Electrostatic decay time tester having circuit detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111899679A (en) * | 2020-07-03 | 2020-11-06 | 厦门强力巨彩光电科技有限公司 | ESD test method of LED display module chip |
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2013
- 2013-01-22 CN CN 201320031744 patent/CN203178372U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111899679A (en) * | 2020-07-03 | 2020-11-06 | 厦门强力巨彩光电科技有限公司 | ESD test method of LED display module chip |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20140122 |