CN201340445Y - Automatic testing system for electronic products - Google Patents
Automatic testing system for electronic products Download PDFInfo
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- CN201340445Y CN201340445Y CNU2008201474382U CN200820147438U CN201340445Y CN 201340445 Y CN201340445 Y CN 201340445Y CN U2008201474382 U CNU2008201474382 U CN U2008201474382U CN 200820147438 U CN200820147438 U CN 200820147438U CN 201340445 Y CN201340445 Y CN 201340445Y
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Abstract
The utility model relates to an automatic testing system for electronic products, which comprises a testing host computer (1), a signal acquisition unit (2), a channel switch (3) and a function switching unit (4); wherein, the function switching unit (4) receives the function switching signal of the testing host computer (1) and switches the tested function of a tested product (8) according to the signal; the channel switch (3) receives the channel switching signal of the testing host computer (1) and gates a channel corresponding to the tested function of the tested product (8); the signal acquisition unit (2), which is connected in series with the testing host computer (1) and the channel switch (3), acquires the tested signal of the tested product (8) and sends the tested signal to the testing host computer (1); and according to a preset standard, the testing host computer (1) analyzes the tested signal and works out a test result. Since the function switching unit can be controlled by the testing host computer to switch the tested functions of the tested product, multiple functions of the tested product can be conveniently tested, and thereby, the efficiency is improved.
Description
[technical field]
The utility model relates to a kind of product test system, more specifically, designs a kind of Auto-Test System of electronic product.
[background technology]
Along with the rising of cost of human resources, reduce the operation number, reduce artificial maloperation and the operation of missing, raise the efficiency, reduce the production test cost, always be the developing direction of manufacturing.On the other hand, along with market competition is more and more fierce, improving the quality of products, ensure the stability of product, has been inexorable trend with production test standardization, mass.So Auto-Test System just should need and produce.
The applying date is that the Chinese patent 200420110581.6 on Dec 2nd, 2004 discloses a kind of " multi-functional standard source Auto-Test System ", this test macro comprises GPIB (General-Purpose InterfaceBus, general purpose interface bus) control module and program-controlled multi-way switch, wherein, the GPIB control module is connected with computer to produce steering order and acceptance test data, and multi-way switch is serially connected between GPIB control module and the test product.
The defective of existing this Auto-Test System is, can not switch the various brakes for the treatment of of test product easily, or need other functions of physical connection aptitude test test product again, cause this Auto-Test System can not test the multiple function of test product apace, testing efficiency is low.
[summary of the invention]
The low defective of testing efficiency at above-mentioned existing Auto-Test System existence, a kind of Auto-Test System of electronic product is provided, this Auto-Test System can be switched the various brakes for the treatment of of test product easily, thus the multiple function that can test test product efficiently.
For this reason, the Auto-Test System of the electronic product that the utility model provides comprises Test Host, signal picker, passage change-over switch and function change-over device, wherein: described function change-over device comprises control module and output module, described control module connects the function switching signal that described Test Host receives described Test Host, and described output module switches the brake for the treatment of of described test product according to described function switching signal; Described passage change-over switch comprises control circuit and gating circuit, described control circuit is connected to the channel switching signal that described Test Host receives described Test Host, described gating circuit is connected in series the IO channel and the described signal picker of described test product, is used for the passage that brake is corresponding for the treatment of of gating and described test product; Described signal picker is connected in series the gating circuit of described Test Host and passage change-over switch, gathers the measured signal of described test product by the passage of described passage change-over switch gating, and described measured signal is sent to described Test Host; Described Test Host receives described measured signal, analyzes described measured signal according to preset standard, produces test result.
Compared with prior art, the Auto-Test System that the utility model provides also comprises function change-over device, described function change-over device switches the brake for the treatment of of test product according to the function switching signal of Test Host, the multiple function that the Auto-Test System that makes the utility model provide can be tested test product has easily improved testing efficiency.
Preferably, described function change-over device is program control telepilot, and the control module of described function change-over device receives the function switching signal of described Test Host, and produces the control signal of the function be used to switch described test product; The output module of described function change-over device is a transmitter module, is used for described control signal is transmitted to described test product.In this preferred version, the function switching signal is program control telepilot, has saved the work of carrying out physical connection, convenient mobile, conversion test product.
Preferably, described function change-over device is an impulse controller, the control module of described function change-over device is by serial ports that is connected to described Test Host and the function switching signal that receives described Test Host, produce pulse control signal according to described function switching signal, and send to described test product by described output module.The attendant advantages of this preferred version is to be applicable to the product that does not possess distant control function, and has avoided the interference of remote signal to automatic checkout system.
Preferably: the function to be measured of described test product comprises DVD playing function and power amplifier function; Described Auto-Test System also comprises the test video disc that is used to produce the standard voice signal.
Preferably: described test product also comprised the audio frequency input function by brake; Described signal picker also is used to produce the standard voice signal, by described passage change-over switch described standard voice signal is transferred to described test product, as the input signal of described test product.
Preferably: the tested function of described test product comprises function of radio receiver; Described Auto-Test System also comprises gpib interface card and radio-frequency signal generator; Described radio-frequency signal generator comprises receiver module, modulation module and the transmitter module that connects in turn, described receiver module receives the standard voice signal that described signal picker produces by described passage change-over switch, described modulation module is modulated into radiofrequency signal with described standard voice signal, and described transmitter module is given described test product with described emission of radio frequency signals; Described gpib interface card is connected in series described Test Host and described radio-frequency signal generator, is used to transmit the control signal of described Test Host to described radio-frequency signal generator.In this preferred version, produce the function of radio receiver of radiofrequency signal by radio-frequency signal generator with the test test product, by gpib interface card radio-frequency signal generator is effectively controlled; Gpib bus is the very ripe bus of a kind of industrial application, technology maturation, good reliability.
Preferably, described passage change-over switch comprises two covers or the above gating circuit of two covers, and every cover gating circuit is used to connect a test product.In this preferred version, the gating circuit that connects test product is many covers, the corresponding test product of every cover, like this, when certain test product of test, can carry out the preliminary work of another test product, testing efficiency has been accelerated in for example carrying, physical connection, initialization etc.
[description of drawings]
Fig. 1 is the synoptic diagram of Auto-Test System of the present utility model;
Fig. 2 is the synoptic diagram in kind of an embodiment of the utility model;
Fig. 3 is a process flow diagram of using Auto-Test System test products shown in Figure 2.
[embodiment]
Below in conjunction with accompanying drawing the utility model is described in detail.Need to prove that " connection " speech had both comprised direct connection in this instructions, also comprised indirect connection, also comprise by wireless signal connecting.
Fig. 1 is the synoptic diagram of Auto-Test System of the present utility model.Auto-Test System comprises the hardware and software two large divisions, Fig. 1 shows main hardware and constitutes, and software mainly is installed in the Test Host 1, and the cardinal principle of this Auto-Test System is that the various hardware of Test Host 1 control carry out collaborative work by test request, finally realizes the test of robotization.
As shown in Figure 1, the Auto-Test System of this electronic product comprises Test Host 1, signal picker 2, passage change-over switch 3 and function change-over device 4.Wherein, function change-over device 4 comprises control module and output module, and control module connects Test Host 1, is used for the function switching signal of acceptance test main frame 1, and output module connects test product 8, is used for switching according to the function switching signal brake for the treatment of of test product 8.Passage change-over switch 3 comprises control circuit and gating circuit, control circuit is connected to Test Host 1, the channel switching signal that is used for acceptance test main frame 1, and the IO channel and the signal picker 2 of gating circuit serial connection test product 8, the passage that brake is corresponding for the treatment of that is used for gating and test product 8 is realized the input and the output of the test signal of test product.The gating circuit of signal picker 2 serial connection Test Hosts 1 and passage change-over switch 3, gather the measured signal of test product 8 by the passage of passage change-over switch 3 gatings, and measured signal sent to Test Host 1, Test Host 1 receives measured signal, analyze measured signal according to preset standard, produce test result.
When specific implementation, Test Host 1 can be common personal computer (PC), also can be special-purpose workstation computer.The hardware and software that computer assemblies is good required just can be used for test products.Usually, the software section of Test Host 1 should comprise test module, module is set, Reports module, wherein, test module is realized the test of each index parameter, comprises to the control of various instruments, passage change-over switch, function change-over device with to the analyses and comparison of audio frequency parameter; Module is set to be realized being provided with various product test parameter testing conditions, test channel and test event; Reports module is realized test result is carried out report output (for example, output shows or storage).
And the preferably high-precision capture card of signal picker 2, for example the PCI-4461 capture card of America NI company.Signal picker 2 mainly becomes digital signal with analog signal conversion, with the Fu Shi rapid analysis method digital signal is carried out various analyses again, to obtain various desired values.
Passage change-over switch 3 is directly linked the printer parallel port of Test Host 1, accepts the passage of the control of Test Host 1 with the gating correspondence, to realize that signal transmits between data acquisition card 2 and test product 8.Correspondingly, function change-over device 4 is accepted the control of Test Host 1 equally to start the corresponding function of test product 8.That is to say, passage change-over switch 3 and function change-over device 4 carry out collaborative work under the control of Test Host 1, many work of doing by operating personnel have originally automatically been finished, for example, after testing a certain function of test product 8, function change-over device 4 automatically starts following a kind of function to be measured of test product 8, simultaneously the passage of passage change-over switch 3 gating correspondences.
More specifically, function change-over device 4 can be the program control telepilot that mates with test product 8.In this case, the function switching signal of program control control of remote controller module acceptance test main frame 1, and produce the control signal of the function be used to switch test product 8, the transmitter module of program control telepilot is transmitted to test product 8 with control signal.When making program control telepilot, need know the control and the enciphered data of test product, like this, test product could be discerned the control signal that program control telepilot sends.After test product 8 receives control signal, and switch to the corresponding brake for the treatment of under the effect of control signal, for example, this treats that brake can be FM radio reception, AM radio reception, audio frequency input, DVD broadcast etc.
As a kind of alternative,, so, can adopt impulse controller as function change-over device 4 if test product 8 can not remote control.Particularly, the control module of impulse controller is connected to the serial ports of Test Host 1, the function switching signal of acceptance test main frame 1, and produce pulse control signal according to the function switching signal, and pulse control signal is sent to test product.
As another kind of improvement project, passage change-over switch 3 comprises two covers or the above gating circuit of two covers, the corresponding test product of every cover gating circuit, as shown in Figure 2.Like this, when Auto-Test System was tested automatically to a product, operating worker can carry out the replacing connecting line work of another product, has improved testing efficiency.
Is that example describes below in conjunction with Fig. 2 with an embodiment of the present utility model.As mentioned above, the Auto-Test System of present embodiment comprises hardware components and software section, and hardware components mainly comprises various instruments, computer, interface Connection Card, passage change-over switch (claiming the audio conversion switch again), function control device (for example telepilot) and standard audio signal dish etc.As shown in Figure 2, Test Host 1 is high performance computer, and pass through PCI slot or the USB interface of signal picker 2 insert computer bus.Passage change-over switch 3 inserts the printer parallel port of computers or serial ports to accept the control of computer, and in addition, the gating passage two ends of passage change-over switch 3 also connect the IO interface of signal picker 2, test product 8 and 9 respectively by tone frequency channel wire.
Similarly, function change-over device (program control telepilot) 4 one ends are connected to the printer parallel port or the serial ports of computer, receive the function switching signal of computer, function change-over device 4 produces control signal according to the function switching signal, and control signal is sent to test product 8 and 9.
The CD of test products or DVD broadcast and power amplifier functional steps are as follows: standard audio signal dish 7 (making according to test index) is put into test product; Function change-over device 4 (program control telepilot) produces corresponding control signal, and test product is switched to corresponding playing function; Sound signal after test product will be play is sent into signal picker 2 (for example PCI-4461 of NI company) through passage change-over switch 3; Analyze by the test function software package in the Test Host 1 again, draw relevant parameter, compare, draw individual event parameter testing result with the standard of setting.
During the audio frequency of test products input Aux-In interfaces such as (for example) microphones, key step is: function change-over device 4 (program control telepilot) produces corresponding control signal, and test product is switched to the respective audio input function; Produce the standard voice signal by signal picker 2 (listing the PCI-4461 of NI company in), send into test product through passage change-over switch 3; Sound signal after test product will be handled is sent into signal picker 2 through passage change-over switch 3; Analyze by the test function software package in the Test Host 1 again, draw relevant parameter, compare, draw individual event parameter testing result with the standard of setting.
If the test function of radio receiver so, also needs gpib interface card 5 and radio-frequency signal generator 6.Those skilled in the art should know, and gpib bus is one of widely used bus.The advantage of gpib interface is a plurality of GPIB equipment to be linked together by an interface, finishes the measurement of multiple different physical quantities simultaneously.Gpib interface card 5 one ends are connected to computer, and the other end is connected to the radio-frequency signal generator 6 that has gpib interface, and radio-frequency signal generator 6 is controlled.Gpib interface card 5 can be bought from the market, for example the gpib interface card of America NI company.
Radio-frequency signal generator 6 comprises receiver module, modulation module and the transmitter module that connects in turn.Receiver module is connected to passage change-over switch 3 by tone frequency channel wire, with the standard voice signal of received signal collector 2 generations.Modulation module is modulated into radiofrequency signal with the standard voice signal, and transmitter module is given test product 8 and 9 with described emission of radio frequency signals.Radio-frequency signal generator 6 is commercially available equally, for example the SG-1501B radio-frequency signal generator of Korea S's gold (JUNJIN).
The function of radio receiver step of test products is as follows: signal picker 2 produces the standard voice signal, emission after passage change-over switch 3 is sent into radio-frequency signal generator 6 modulation; Function change-over device 4 (program control telepilot) produces corresponding control signal, and test product is switched to corresponding function; The sound signal of test product after with demodulation sent into signal picker 2 through passage change-over switch 3; Analyze by the test function software package in the Test Host 1 again, draw relevant parameter, compare, draw individual event parameter testing result with the standard of setting.
Fig. 3 is the entire flow figure that uses Auto-Test System test products shown in Figure 2.As shown in Figure 3, after the beginning step S300, in step S301, connect test macro and test product, the standard signal video disc of test usefulness is put into test product, play and the power amplifier function with the test video disc according to line relation shown in Figure 3.Then, among the step S302, the energising of Test Host (computer) control test product power supply.Among the step S303, passage change-over switch (also can be described as the audio frequency change-over switch) switches to corresponding passage under the control of Test Host.Then, among the step S304, function change-over device (for example program control telepilot) is controlled test product and is entered duty under the control of Test Host, enable the video disc playing function, enters normal audio frequency parameter test.Among the step S305, Test Host judges whether to have finished relevant tests such as video disc broadcast, power amplifier, if also do not finish, flow process is just returned step S303; If finish, then the test of built-in power amplifier has been finished in explanation, shown in step S306.
Then, the test of beginning FM function of radio receiver is shown in step S307.Similarly, the passage change-over switch switches to respective channel among the step S308.Then, among the step S309, Test Host 1 control and configuration radio-frequency signal generator (for example SG-1501B radio-frequency signal generator of Korea S's gold letter), the standard voice signal that radio-frequency signal generator produces by passage change-over switch received signal collector is launched after the standard voice signal is modulated into radiofrequency signal.Simultaneously, function change-over device (for example program control telepilot) is enabled the FM function of radio receiver of test product, to carry out the test of FM function of radio receiver.After all parameter testings of FM radio reception finished, flow process entered step S310, the test of beginning AM function of radio receiver.
The function class of the process of test AM radio reception and test FM radio reception seemingly, particularly, step S311 and step S308 are similar, the corresponding passage of passage change-over switch gating.Step S312 and step S309 are similar, Test Host 1 control and configuration radio-frequency signal generator (for example SG-1501B radio-frequency signal generator of Korea S's gold letter), the standard voice signal that radio-frequency signal generator produces by passage change-over switch received signal collector is launched after the standard voice signal is modulated into radiofrequency signal.Simultaneously, function change-over device (for example program control telepilot) is enabled the AM function of radio receiver of test product, to carry out the test of AM function of radio receiver.After all parameter testings of AM radio reception finished, flow process ended at step S312.
More than functions such as video disc broadcast/power amplifier, FM radio reception test, AM radio reception test are tested.Being noted that can be according to actual conditions, by the adjustment that Test Host 1 is realized the testing sequence of these functions is set.
Be test function and the parameter that in an embodiment of the utility model Auto-Test System, realizes below:
1, built-in power amplifier aspect:
Testable parameter comprises: other audio frequency parameters such as output power, frequency response, distortion, degree of separation, quality of balance, signal to noise ratio (S/N ratio);
Testable audiorange: 10Hz～50KHz.
2, FM/AM radio reception aspect:
Testable parameter comprises: receive (stopping platform) sensitivity, other audio frequency parameters such as practical (limit is made an uproar) sensitivity, frequency response, distortion, degree of separation, quality of balance, signal to noise ratio (S/N ratio):
Testable radio-frequency region: 100KHz～150MHz.
Testable audiorange: 10Hz～50KHz.
Because " sensitivity of lighting a lamp " shows on the screen of test product that normally therefore, " sensitivity of lighting a lamp " this parameter can adopt computer to set, the mode of artificial judgment test result.This can be placed first or last to test, to improve whole testing efficiency as much as possible.
Above-described the utility model embodiment does not constitute the qualification to the utility model protection domain.Any modification of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present utility model.
Claims (7)
1, a kind of Auto-Test System of electronic product is characterized in that, comprises Test Host (1), signal picker (2), passage change-over switch (3) and function change-over device (4), wherein:
Described function change-over device (4) comprises control module and output module, described control module connects the function switching signal that described Test Host (1) receives described Test Host (1), and described output module switches the brake for the treatment of of test product (8) according to described function switching signal;
Described passage change-over switch (3) comprises control circuit and gating circuit, described control circuit is connected to the channel switching signal that described Test Host (1) receives described Test Host (1), described gating circuit is connected in series the IO channel and the described signal picker (2) of described test product (8), is used for the passage that brake is corresponding for the treatment of of gating and described test product (8);
Described signal picker (2) is connected in series the gating circuit of described Test Host (1) and passage change-over switch (3), passage by described passage change-over switch (3) gating is gathered the measured signal of described test product (8), and described measured signal is sent to described Test Host (1);
Described Test Host (1) receives described measured signal, analyzes described measured signal according to preset standard, produces test result.
2, Auto-Test System according to claim 1, it is characterized in that, described function change-over device (4) is program control telepilot, the control module of described function change-over device (4) receives the function switching signal of described Test Host (1), and produces the control signal of the function be used to switch described test product (8); The output module of described function change-over device (4) is a transmitter module, is used for described control signal is transmitted to described test product (8).
3, Auto-Test System according to claim 1, it is characterized in that, described function change-over device (4) is an impulse controller, the control module of described function change-over device (4) is by serial ports that is connected to described Test Host and the function switching signal that receives described Test Host (1), produce pulse control signal according to described function switching signal, and send to described test product (8) by described output module.
4, Auto-Test System according to claim 2 is characterized in that: the function to be measured of described test product (8) comprises DVD playing function and power amplifier function; Described Auto-Test System also comprises the test video disc that is used to produce the standard voice signal.
5, Auto-Test System according to claim 4 is characterized in that: described test product (8) also comprised the audio frequency input function by brake; Described signal picker (2) also is used to produce the standard voice signal, by described passage change-over switch (3) described standard voice signal is transferred to described test product (8), as the input signal of described test product (8).
6, Auto-Test System according to claim 2 is characterized in that:
The tested function of described test product (8) comprises function of radio receiver;
Described Auto-Test System also comprises gpib interface card (5) and radio-frequency signal generator (6); Described radio-frequency signal generator (6) comprises receiver module, modulation module and the transmitter module that connects in turn, described receiver module receives the standard voice signal that described signal picker (2) produces by described passage change-over switch (3), described modulation module is modulated into radiofrequency signal with described standard voice signal, and described transmitter module is given described test product (8) with described emission of radio frequency signals; Described gpib interface card (5) is connected in series described Test Host (1) and described radio-frequency signal generator (6), is used to transmit the control signal of described Test Host (1) to described radio-frequency signal generator (6).
According to any described Auto-Test System in the claim 1 to 6, it is characterized in that 7, described passage change-over switch (3) comprises two covers or the above gating circuit of two covers, every cover gating circuit is used to connect a test product.
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