CN105510791A - Test method for testing infrared receiving terminal of remote controller - Google Patents
Test method for testing infrared receiving terminal of remote controller Download PDFInfo
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- CN105510791A CN105510791A CN201510873358.XA CN201510873358A CN105510791A CN 105510791 A CN105510791 A CN 105510791A CN 201510873358 A CN201510873358 A CN 201510873358A CN 105510791 A CN105510791 A CN 105510791A
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- receiving terminal
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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
- G01R31/26—Testing of individual semiconductor devices
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Abstract
The invention discloses a test method for testing the infrared receiving terminal of a remote controller. The method comprises the steps of A, firstly, respectively setting the amplitude and the frequency of a module pin inside a to-be-tested receiving terminal and the amplitude and the frequency of the channel of a testing machine to be matched with each other, and connecting the module pin with the testing machine via a connecting line; B, through the program and pattern of a direct digital frequency synthesizer inside the testing machine, controlling the parameter output of the module pin andobtaining a sine wave; C, obtaining a test result based on the related parameters of the sine wave. The above method is applied to the multi-station test and further improves the test precision.
Description
Technical field
The present invention relates to household appliances method of testing application, particularly relate to a kind of method of testing of telepilot infrared receiving terminal of applicable multistation test.
Background technology
Telepilot infrared receiving terminal is product indispensable in white domestic appliances, and dimensions of market is very huge.The chip of its inside is generally based on Korea S's chip, and the method for testing of telepilot infrared receiving terminal chip is also the testing scheme relying on Korea S to provide at present, namely utilize ALS1000 tester to test, its test process needs the plate being equipped with AWI, and cost is very expensive; And domestic Ye Youduojia chip producer also starts the chip setting foot in this field, develop the scheme using sweep generator to carry out sweep test, although the program reduces some costs, but be not suitable for multistation test, and because communication process is longer, the test duration of chip is also long, cannot the testing cost of control chip more accurately, its measuring accuracy is not high yet.
2012.06.20 bulletin, notification number is in the Chinese invention patent of CN102499625A, disclose the method that infrared remote control vision self-operated measuring unit carries out test automatically, it is characterized in that, its step is as follows: 1) experimenter is by telepilot input No. ID, identification, if No. ID is correct, proceed to step 2), if ID mistake, re-enter; 2) host computer display stochastic generation display test sighting target, experimenter test from predetermined level, by telepilot input test the direction of one-level sighting target; 3) step 2) described in test one-level sighting target direction judge whether correct by host computer and carry out statistic record, if correct, proceed to the test of next stage sighting target, if mistake, go back to the test of upper level sighting target; 4) step 3) described in go back to the test of upper level sighting target by or the test of full accuracy grade sighting target answer correct then end of test and proceed to step 5); 5) host computer statistics experimenter test result, and whether meet preset standard measuring distance by the distance that Ultrasonic ranging device detects between experimenter and upper seat in the plane display, if meet, judge that test result is effective, output test result over the display, if do not meet, judge that test result is invalid, and go back to step 1).Repeatability of the present invention by force, accurately and reliably, precision is high, measuring process robotization, and be easy to operation, intelligent cost is low, practical.
But the method operation steps of this test is more loaded down with trivial details, not only needs to input No. ID, identification, also need statistic record, and it is still not suitable for multistation test.
Summary of the invention
For overcoming above-mentioned shortcoming, the object of the present invention is to provide a kind of method of testing of telepilot infrared receiving terminal, having reached the object making its applicable multistation test, improve measuring accuracy further.
In order to reach above object, the technical solution used in the present invention is: a kind of method of testing of telepilot infrared receiving terminal, comprises the following steps:
A: be first the amplitude and frequency that match with tester table channel setting respectively by the module pin of Receiver inside to be measured, by connecting line, above-mentioned module pin be connected to tester table;
B: exported by the program of the Direct Digital Synthesizer in tester table and the parameter of pattern control module pin again, obtain sine wave;
C: by the correlation parameter of sine wave, draw test result.By increasing Direct Digital Synthesizer in tester table, it can produce variable signal voluntarily, and there is very fast response speed, applicable multistation is tested simultaneously, Direct Digital Synthesizer has the advantage of low cost, low-power consumption, high resolving power and fast conversion times, it achieves the total digitalization of equipment, not only makes operating process become simplification, further improves the precision of test.
Further, Direct Digital Synthesizer in described step B passes through the frequency control word changed in it and then the phase-accumulated speed changing phase accumulator, again by sampling under the control of fixed clock, the phase value obtained is converted to the amplitude sequence corresponding with phase value by phase amplitude, and this amplitude sequence obtains the sine wave exported by digital-to-analog conversion and low-pass filtering.
Further, described sine wave directly can be used as clock source, and being converted into square wave therein becomes clock generator flexibly.Make a digital programmable frequency compositor and clock generator functionalization, the cost tested can be controlled accurately.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The method of testing of a kind of telepilot infrared receiving terminal of the present embodiment, comprises the following steps:
A: be first the amplitude and frequency that match with tester table channel setting respectively by the module pin of Receiver inside to be measured, by connecting line, above-mentioned module pin be connected to tester table;
B: exported by the program of the Direct Digital Synthesizer in tester table and the parameter of pattern control module pin again, obtain sine wave; The principle of work of Direct Digital Synthesizer is the corresponding relation based on phase place and amplitude, by changing frequency control word in it and then changing the phase-accumulated speed of phase accumulator, again by sampling under the control of fixed clock, the phase value obtained is converted to the amplitude sequence corresponding with phase value by phase amplitude, and this amplitude sequence obtains the sine wave exported by digital-to-analog conversion and low-pass filtering;
C: by the correlation parameter of sine wave, draw test result.
The model of the chip of Direct Digital Synthesizer is AD9851, signal generating module is made with it, AD9851 is the integrated equipment of a kind of height, adopt advanced DDS technology, add inner high speed degree, high-performance D/A converter and comparer, make a digital programmable frequency compositor and clock generator functionalization.When with reference to clock source accurately, AD9851 can produce a stable frequency and phase place, and can the analog sine of digitizing programming export.This sine wave directly can be used as clock source, and being converted into square wave therein becomes clock generator flexibly.AD9851 adopts in up-to-date high-speed DDS the frequency control word endorsing acceptance 32,180MHz system clock, and resolution is 0.04 hertz; This AD9851 comprises distinctive 6 × REFCLK multiplier circuit, therefore without the need to high speed outer crystal oscillator.6 × REFCLK multiplier makes it have minimum Spurious Free Dynamic Range SFDR and phase noise characteristic.
By this Direct Digital Synthesizer, the scanning process of frequency can be realized, 55K is scanned from 30K, judge the central point of chip belt bandpass filter, then by fuse, central point is burnt 38K, the frequency accuracy of this module is very high, can meet the testing requirement of client completely, conveniently carry out 4site concurrent testing simultaneously, meet the requirement of client's efficiency.
Above embodiment is only for illustrating technical conceive of the present invention and feature; its object is to allow person skilled in the art understand content of the present invention and to be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. a method of testing for telepilot infrared receiving terminal, is characterized in that: comprise the following steps:
A: be first the amplitude and frequency that match with tester table channel setting respectively by the module pin of Receiver inside to be measured, by connecting line, above-mentioned module pin be connected to tester table;
B: exported by the program of the Direct Digital Synthesizer in tester table and the parameter of pattern control module pin again, obtain sine wave;
C: by the correlation parameter of sine wave, draw test result.
2. the method for testing of a kind of telepilot infrared receiving terminal according to claim 1, it is characterized in that: the Direct Digital Synthesizer in described step B passes through the frequency control word changed in it and then the phase-accumulated speed changing phase accumulator, again by sampling under the control of fixed clock, the phase value obtained is converted to the amplitude sequence corresponding with phase value by phase amplitude, and this amplitude sequence obtains the sine wave exported by digital-to-analog conversion and low-pass filtering.
3. the method for testing of a kind of telepilot infrared receiving terminal according to claim 2, is characterized in that: described sine wave directly can be used as clock source, and being converted into square wave therein becomes clock generator flexibly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510873358.XA CN105510791A (en) | 2015-12-02 | 2015-12-02 | Test method for testing infrared receiving terminal of remote controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510873358.XA CN105510791A (en) | 2015-12-02 | 2015-12-02 | Test method for testing infrared receiving terminal of remote controller |
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| CN105510791A true CN105510791A (en) | 2016-04-20 |
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| CN201510873358.XA Pending CN105510791A (en) | 2015-12-02 | 2015-12-02 | Test method for testing infrared receiving terminal of remote controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226655A (en) * | 2017-12-15 | 2018-06-29 | 四川金网通电子科技有限公司 | A kind of infrared receiving terminal Electromagnetic Interference Test method |
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| CN104280625A (en) * | 2013-07-10 | 2015-01-14 | 鸿富锦精密工业（深圳）有限公司 | Testing system of infrared emission device and testing method of infrared emission device |
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2015
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| CN2419604Y (en) * | 2000-04-27 | 2001-02-14 | 王文凯 | Signal tester for infrared remote controller for household electric appliances |
| US20020108080A1 (en) * | 2001-02-08 | 2002-08-08 | Mitsubishi Denki Kabushiki Kaisha | Apparatus and method for testing semiconductor integrated circuit |
| CN2720454Y (en) * | 2004-07-29 | 2005-08-24 | 邹城市技工学校 | Infrared telecontroller tester |
| CN101493488A (en) * | 2008-01-22 | 2009-07-29 | 杭州士兰微电子股份有限公司 | Remote controller test system and method |
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| CN108226655A (en) * | 2017-12-15 | 2018-06-29 | 四川金网通电子科技有限公司 | A kind of infrared receiving terminal Electromagnetic Interference Test method |
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