CN203287489U - System for testing amplifying power of television stylus signal panel - Google Patents
System for testing amplifying power of television stylus signal panel Download PDFInfo
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- CN203287489U CN203287489U CN2013203220485U CN201320322048U CN203287489U CN 203287489 U CN203287489 U CN 203287489U CN 2013203220485 U CN2013203220485 U CN 2013203220485U CN 201320322048 U CN201320322048 U CN 201320322048U CN 203287489 U CN203287489 U CN 203287489U
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Abstract
The utility model discloses a system for testing the amplifying power of a television stylus signal panel, and relates to the technical field of circuit board detection. The system comprises a signal generator, a signal receiving device, a signal collection device and an upper computer, wherein the signal generator is used for simulating the light emitting process of a television when scanning position information; the signal receiving device is used for receiving light signals given out by an LED (light-emitting diode), converting the received light signals into electric signals, and transmitting the electric signals to a signal panel under test; the signal collection device is used for collecting voltage of the signal panel under test during the test, and transmitting collection results to the upper computer; and the upper computer judges whether the signal panel under test complies with the design requirement or not according to the collection results transmitted by the signal collection device. The system disclosed by the utility model can test whether the amplifying power of the signal panel of a television stylus meets the design requirement or not when the signal panel is still a semi-finished product, thereby being capable of screening unqualified products out during an earlier working procedure.
Description
Technical field
The utility model relates to the detection technique field of circuit board, particularly a kind of test macro of TV pointer signal plate amplifying power.
Background technology
Development along with touch technology, occurred on market that some have the televisor of touch controllable function, as plasm TV, TV pointer as touch-control TV auxiliary products is also arisen at the historic moment, become a kind of emerging electronic product, this product can arbitrarily be write, put tactile on TV, makes plasm TV realize touch screen functionality.
The principle of work of TV pointer is: each pixel of TV sends the light signal with positional information, pointer converts this light signal electric signal to and it is carried out multistage amplification, change into the digital signal of high-low level, the MCU(Micro Control Unit of pointer) calculate the coordinate of pointer on television screen according to this digital signal, then by wireless mode, send to televisor.
Be used on pointer completing light signal to electric signal transform and the circuit board of a series of functions such as the amplification of electric signal and high-low level conversion we be referred to as signal plate.The signal handling capacity of signal plate and consistance thereof are the key problem in technology of pointer design research and development.This just need to have a kind of method and apparatus that can test the signal plate semi-manufacture for the pointer finished product can meet design requirement.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of test macro of TV pointer signal plate amplifying power, the test macro of this TV pointer signal plate amplifying power can be completed the half-finished functional test of the signal plate of pointer, can improve the product qualified rate of TV pointer.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of test macro of TV pointer signal plate amplifying power, comprise: signal generation apparatus, be used for the luminescence process of simulated television when scanning position information, described signal generation apparatus comprises main control chip and is controlled luminous emitting led by described main control chip; Signal receiving device, be used for receiving the described emitting led light signal that sends, and the light signal that will receive is converted to electric signal transmission to signal plate to be tested, the photodiode that described signal receiving device is electrically connected to described signal plate to be tested while comprising test; Signal pickup assembly, the voltage while being used for gathering described signal plate test to be tested, and collection result is transferred to host computer, and described signal pickup assembly comprises data acquisition card, described data acquisition card is electrically connected to described signal receiving device; Described host computer, the described collection result that transmits according to described signal pickup assembly judges whether described signal plate to be tested meets designing requirement, described host computer is electrically connected to described signal generation apparatus and described signal pickup assembly respectively.
Wherein, described test macro also comprises the steering logic unit, and described steering logic unit is electrically connected to respectively described host computer and described signal plate to be tested.
Wherein, described test macro also comprises power module, and described power module is electrically connected to respectively described signal generation apparatus and described signal plate to be tested.
Wherein, described signal generation apparatus and described signal receiving device are installed in same shell, and described cover top portion is provided with instrument connection, and described signal plate to be tested is positioned over described instrument connection place and carries out functional test.
Wherein, described signal plate to be tested is electrically connected to described test macro by the test probe group that is arranged at described instrument connection place.
Wherein, described test probe group comprises: power probe, power end and the described power module of the described signal plate to be tested of electrical connection; Signal input probe, be electrically connected to the voltage signal input end of described signal plate to be tested and negative electrode and the anode of described photodiode; Signal output probe, voltage signal intermediate ends and output terminal and the described data acquisition card of the described signal plate to be tested of electrical connection; The gain-adjusted probe, gain-adjusted end and the described steering logic unit of the described signal plate to be tested of electrical connection.
Wherein, described test probe group is fixed in the top of described shell.
Wherein, described signal pickup assembly is digital oscilloscope.
After having adopted technique scheme, the beneficial effects of the utility model are: because the test macro of the utility model TV pointer signal plate amplifying power comprises: the signal generation apparatus that is used for the luminescence process of simulated television when scanning position information; Be used for receiving the light signal that signal generation apparatus sends, and the light signal that will receive is converted to the signal receiving device of electric signal transmission to signal plate to be tested; Voltage while being used for gathering signal plate test to be tested, and collection result is transferred to the signal pickup assembly of host computer; The collection result that transmits according to signal pickup assembly judges whether signal plate to be tested meets the host computer of designing requirement.In signal plate semi-manufacture when test carrying out pointer, be connected signal plate to be tested with test macro, start to carry out the test job of signal plate to be tested after connection: but sent the light signal of simulated television by signal generation apparatus; Signal receiving device receives the light signal that signal generation apparatus sends, and light signal is converted to electric signal is given to signal plate to be tested; The voltage signal that signal plate to be tested will receive amplifies output; Signal pickup assembly gathers the voltage of input stage, intergrade and the output stage of signal plate to be tested, calculate respectively the sample mean of each step voltage, and the mean values at different levels that will draw is transferred to host computer; After the data that host computer transmits signal pickup assembly are carried out computing, with testing standard, compare and analyze, thereby judge signal plate to be tested, whether meet designing requirement.From the above, whether the utility model can just can test out it when the signal plate of pointer or semi-manufacture enlarging function meets design requirement, thereby just substandard product can be screened in operation early, improved the qualification rate of subsequent processing product, and then improved the product qualified rate of TV pointer, the work that has improved simultaneously the workman is efficient, has reduced the production cost of TV pointer.
Description of drawings
Fig. 1 is the functional block diagram of the test macro of the utility model TV pointer signal plate amplifying power;
Fig. 2 is the external structure schematic diagram of the test macro of the utility model TV pointer signal plate amplifying power;
Fig. 3 is the inner structure schematic diagram of the test macro of the utility model TV pointer signal plate amplifying power;
Fig. 4 is the workflow diagram of the test macro of the utility model TV pointer signal plate amplifying power;
In figure: 10, shell, 100, fairlead, 102, instrument connection, 12, main circuit board, 14, emitting led, 16, photodiode, 18, the test probe group, 20, signal plate to be tested, the 30, first arrow, the 32, second arrow, the 34, the 3rd arrow.
Embodiment
, below in conjunction with drawings and Examples, further set forth the utility model.
A kind of test macro of TV pointer signal plate amplifying power, be used for half-finished enlarging function test of TV pointer signal plate.
As shown in Figure 1, comprising:
Signal generation apparatus, comprise main control chip and controlled luminous emitting led by main control chip, be used for the luminescence process of simulated television when scanning position information, main control chip adopts MCU, after the test macro power-up initializing, the automatic imitation televisor carries out luminous work, does not need to carry out manually-operated.
Signal receiving device, comprise photodiode, and the anode of photodiode and negative electrode respectively are electrically connected to the voltage signal input end of signal plate to be tested by a signal input probe.Photodiode is used for receiving the emitting led light signal that sends, and the light signal that will receive is converted to electric signal and inputs probe transmission by signal and give signal plate to be tested, and the specifications and models of the photodiode on the specifications and models of photodiode and TV pointer are identical.
Signal pickup assembly, be digital oscilloscope, and its inside is provided with data acquisition card, and data acquisition card is electrically connected to signal input probe, inputs probe by signal and gathers the input stage voltage signal of signal plate to be tested; Data acquisition card also is electrically connected with signal output probe, signal output probe is electrically connected to intermediate ends and the output terminal of the voltage signal of signal plate to be tested, and data acquisition card is exported probe by signal and gathered mid-stage voltage signal and the output stage voltage signal of signal plate to be tested.Digital oscilloscope is processed the voltage signal of input stage, intergrade and the output stage of the signal plate to be tested that collects, processing procedure is as follows: it is the pulse voltage signal of tens seconds that the light signal that signal generator sends is changed into width by photodiode, the input stage peak value of pulse is less, only has tens millivolts; Intergrade has the hundreds of millivolt; Output stage is near saturated.After test started, digital oscilloscope gathered respectively 30 pulse signal peak values in input stage, intergrade and output stage, and obtains sample mean at different levels, is defined as respectively Vin, Vm and Vout, then collection result Vin, Vm and Vout is transferred to host computer.
Host computer, test analysis software is installed in host computer, after host computer receives digital oscilloscope transmission next Vin, Vm and Vout data, calculate enlargement factor Vm/Vin and the Vout/Vm of each inter-stage, the actual amplifying power that reflects every one-level that this numerical value can be quantitative.If multistage amplification, the mean value of rear one-level is divided by the mean value of previous stage, and the value that obtains is the actual amplifying power of every one-level operational amplification circuit in signal plate to be tested.Actual amplifying power value and the testing standard value of the every one-level that then will try to achieve are made comparisons, and judge whether the signal amplifying power of this signal plate to be tested meets designing requirement.
The steering logic unit, the steering logic unit is electrically connected to host computer, also by the gain-adjusted probe, with signal plate to be tested, is electrically connected to.For the signal plate to be tested with gain control function, host computer can send the gain-adjusted instruction and change the amplifying power of signal plate to be tested, and the gain-adjusted instruction that host computer sends is transferred to signal plate to be tested by the steering logic unit.
Power module, be electrically connected to signal generation apparatus and signal plate to be tested, and is electrically connected to by power probe between signal plate to be tested.
In Fig. 1: the flow direction of the first arrow 30 representation signals; The second arrow 32 represents the flow direction of host computer command signal; The supplier of electricity that the 3rd arrow 34 represents power module to.
As shown in Fig. 2 and Fig. 3 were common, signal generation apparatus and signal receiving device were installed in same shell 10.The main control chip of signal generation apparatus and emitting led 14 all is positioned on the main circuit board 12 of shell 10, also is provided with on main circuit board 12 for the circuit that receives and process the test instruction that host computer sends.Signal receiving device comprises photodiode 16, and the signal input probe in test probe group 18 connects respectively negative electrode and the anode of photodiode 16, is fixed in the top of shell 10.
As shown in Fig. 1 and Fig. 2 were common, shell 10 tops were provided with instrument connection 102, and instrument connection 102 places are provided with the test probe group 18 that is fixed on shell 10 tops, and signal plate 20 to be tested is positioned over instrument connection 102 places and carries out functional test.The test probe group comprises: power probe is electrically connected to power end and the power module of signal plate 20 to be tested; Signal input probe, be electrically connected to the voltage signal input end of signal plate 20 to be tested and negative electrode and the anode of photodiode 16; Signal is exported probe, is electrically connected to voltage signal intermediate ends and output terminal and the data acquisition card of signal plate 20 to be tested; The gain-adjusted probe, be electrically connected to gain-adjusted end and the steering logic unit of signal plate 20 to be tested.When testing, each probe of test probe group 18 inserts respectively in the corresponding test point of signal plate 20 to be tested.
As shown in Figure 2, shell 10 is provided with fairlead 100, and the steering order signal wire of power lead, ground wire, host computer, the signals collecting line of digital oscilloscope all pass from fairlead 100.
As shown in Figure 3, signal plate 20 to be tested is PCBA(Printed Circuit Board Assembly with main circuit board 12).
As shown in Figure 1, Figure 2 with 4 common shown in, workflow of the present utility model is as follows:
S1, system power on, and signal generator is started working, and signal plate 20 to be tested is fixed on instrument connection 102 places, by power probe, work on power;
S2, tester send test instruction by the analysis software of installing on host computer;
S3, digital oscilloscope are inputted input stage voltage signal, mid-stage voltage signal and the output stage voltage signal of probe and signal output probe collection signal plate 20 to be tested by signal, and calculate the sample mean of each step voltage, the data transmission that then will calculate is to host computer;
After S4, host computer receive the data that digital oscilloscope transmits, calculate the amplifying power values at different levels of trying to achieve signal plate 20 to be tested, and amplifying power values at different levels and testing standard are compared analysis, draw the conclusion whether signal plate 20 to be tested meets design standards, and conclusion is shown to the tester, complete the testing process of signal plate 20 to be tested.
The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of making, within all dropping on protection domain of the present utility model.
Claims (8)
1. the test macro of TV pointer signal plate amplifying power, is characterized in that, comprising:
Signal generation apparatus, be used for the luminescence process of simulated television when scanning position information, and described signal generation apparatus comprises main control chip and controlled luminous emitting led by described main control chip;
Signal receiving device, be used for receiving the described emitting led light signal that sends, and the light signal that will receive is converted to electric signal transmission to signal plate to be tested, the photodiode that described signal receiving device is electrically connected to described signal plate to be tested while comprising test;
Signal pickup assembly, the voltage while being used for gathering described signal plate test to be tested, and collection result is transferred to host computer, and described signal pickup assembly comprises data acquisition card, described data acquisition card is electrically connected to described signal receiving device;
Described host computer, the described collection result that transmits according to described signal pickup assembly judges whether described signal plate to be tested meets designing requirement, described host computer is electrically connected to described signal generation apparatus and described signal pickup assembly respectively.
2. the test macro of TV pointer signal plate amplifying power according to claim 1, is characterized in that, described test macro also comprises the steering logic unit, and described steering logic unit is electrically connected to respectively described host computer and described signal plate to be tested.
3. the test macro of TV pointer signal plate amplifying power according to claim 2, is characterized in that, described test macro also comprises power module, and described power module is electrically connected to respectively described signal generation apparatus and described signal plate to be tested.
4. the test macro of the described TV pointer of according to claim 1 to 3 any one claim signal plate amplifying power, it is characterized in that, described signal generation apparatus and described signal receiving device are installed in same shell, described cover top portion is provided with instrument connection, and described signal plate to be tested is positioned over described instrument connection place and carries out functional test.
5. the test macro of TV pointer signal plate amplifying power according to claim 4, is characterized in that, described signal plate to be tested is electrically connected to described test macro by the test probe group that is arranged at described instrument connection place.
6. the test macro of TV pointer signal plate amplifying power according to claim 5, is characterized in that, described test probe group comprises:
Power probe, power end and the described power module of the described signal plate to be tested of electrical connection;
Signal input probe, be electrically connected to the voltage signal input end of described signal plate to be tested and negative electrode and the anode of described photodiode;
Signal output probe, voltage signal intermediate ends and output terminal and the described data acquisition card of the described signal plate to be tested of electrical connection;
The gain-adjusted probe, gain-adjusted end and the described steering logic unit of the described signal plate to be tested of electrical connection.
7. the test macro of TV pointer signal plate amplifying power according to claim 5, is characterized in that, described test probe group is fixed in the top of described shell.
8. the test macro of TV pointer signal plate amplifying power according to claim 1, is characterized in that, described signal pickup assembly is digital oscilloscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203220485U CN203287489U (en) | 2013-06-05 | 2013-06-05 | System for testing amplifying power of television stylus signal panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203220485U CN203287489U (en) | 2013-06-05 | 2013-06-05 | System for testing amplifying power of television stylus signal panel |
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| Publication Number | Publication Date |
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| CN203287489U true CN203287489U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203220485U Expired - Fee Related CN203287489U (en) | 2013-06-05 | 2013-06-05 | System for testing amplifying power of television stylus signal panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308849A (en) * | 2013-06-05 | 2013-09-18 | 青岛歌尔声学科技有限公司 | Test system for amplification capability of TV stylus signal panel |
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2013
- 2013-06-05 CN CN2013203220485U patent/CN203287489U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308849A (en) * | 2013-06-05 | 2013-09-18 | 青岛歌尔声学科技有限公司 | Test system for amplification capability of TV stylus signal panel |
| CN103308849B (en) * | 2013-06-05 | 2016-01-20 | 青岛歌尔声学科技有限公司 | The test macro of TV pointer signal plate amplifying power |
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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: 20131113 Termination date: 20160605 |