TWI417556B - Multi-channel electrical switch and testing device using the same - Google Patents

Description

Multi-channel electronic switch and test device having the same

The invention relates to an electronic switch, in particular to a multi-channel electronic switch capable of switching a plurality of channels and a test device having the same.

At present, electronic products come with a variety of interfaces, many of which include multiple channels (or multiple pins, Pin), such as video DAC (Digital Analog Converter) interface including red, blue, green three I/O channels. When manufacturing the electronic product, the manufacturer needs to detect all channels of the interface to ensure the quality of the video output signal of each channel of the interface.

As shown in FIG. 1 , it is a schematic diagram of the architecture of a typical test system 10 , wherein the electronic device 12 to be tested has a multi-channel interface 120 , and the corresponding test device 14 only has a single channel interface 140 and is detected in the multi-channel interface 120 . During the process, the operator will use a connection cable 16 with a multi-channel interface at one end and a plurality of single-channel interfaces at the other end. During the test, multiple single-channel interfaces of the connection cable 16 need to be plugged and unplugged multiple times, so that the test device 14 The plurality of channels in the multi-channel interface 120 of the electronic device 12 are sequentially connected and tested. However, such a test step is not only cumbersome, time consuming, but also frequently inserted and removed. The single channel interface 140 of the device 14 carries physical damage.

In view of this, it is necessary to provide a multi-circuit electronic switch that can reduce the insertion and removal of the test.

It is also necessary to provide a test apparatus having the multiplexed electronic switch.

A multi-channel electronic switch for connecting to an electronic device to be tested and a test device by a connecting cable. The multi-channel electronic switch comprises a multi-channel interface, a single-channel interface, a sound collecting unit and a control unit, and the multi-channel interface is connected to the multi-channel interface of the electronic device to be tested, and the single channel interface is used for connecting with the test device, the sound The collecting unit is configured to collect sound signals for sound and electric conversion to generate sound and electric signals; the control unit is configured to convert the generated sound and electric signals into audio data, and then compare the audio data with the pre-stored reference audio data, and Switching between the channels of the multi-channel interface of the electronic switch and the single-channel interface one by one when the two are matched, thereby connecting the multi-channel interface of the electronic device to the testing device one by one, the control unit is also used to use the above The generated audio material replaces the pre-stored reference audio material as a new reference audio material, wherein the initially pre-stored reference audio material is the lowest required reference.

A test device is connected to an electronic device to be tested by a connection cable. The testing device comprises a testing unit for testing a communication interface in the electronic device, the testing device further comprising a multi-channel electronic switch, the multi-channel electronic switch comprising a multi-channel interface, a single channel interface, a sound collecting unit and a control unit, the plurality The channel interface is used for connecting with a multi-channel interface of the electronic device to be tested; the single channel interface is used for connecting with the test unit; the sound collection unit is for collecting sound signals And performing acoustic-electrical conversion to generate an acoustic signal; the control unit is configured to convert the generated acoustic signal into audio data, and then compare the audio data with the pre-stored reference audio data, and switch the two when the two match Each of the multi-channel interfaces is in communication with the single-channel interface, and the control unit is further configured to replace the pre-stored reference audio data with the generated audio data as the new reference audio data, wherein the initially pre-stored reference audio data is the lowest Request a benchmark.

The multi-channel electronic switch is used as an intermediary for connecting the electronic device and the testing device, and the plurality of channels of the electronic device to be tested are connected to the testing device one by one by the channel switching of the electronic circuit of the sound control, compared with the previous replacement interface. The channel switching mode makes the test operation more convenient, saves the test time, and avoids the physical damage caused by the insertion and removal of the interface of the test device.

10, 20‧‧‧ test system

272‧‧‧Comparative Module

26, 36‧‧‧Multiple electronic switches

274, 388‧‧‧Switch Module

12, 22‧‧‧ Electronic equipment

368‧‧‧ storage unit

14, 24, 44‧‧‧ test equipment

372‧‧‧Maintenance unit

28‧‧‧Test unit

382‧‧‧identification module

266, 366‧‧‧ sound collection unit

384‧‧‧Analysis module

268, 370‧‧‧ control unit

386‧‧‧Command Generation Module

120, 220, 262, 362‧‧‧ multi-channel interface

140, 240, 264, 282, 364‧‧‧ single channel interface

16, 230, 250‧‧‧ Connection cable

Figure 1 is a schematic diagram of the architecture of a typical test system.

2 is a schematic diagram of a test system architecture of a preferred embodiment.

3 is a functional block diagram of a multi-channel electronic switch in accordance with a preferred embodiment.

4 is a functional block diagram of a multi-channel electronic switch of another preferred embodiment.

FIG. 5 is a schematic diagram of a test system architecture of another preferred embodiment.

Please refer to FIG. 2 and FIG. 3 simultaneously, which are schematic diagrams of the architecture of the test system 20 and a functional module diagram of the multi-channel electronic switch. The electronic device 22 to be tested has a multi-channel interface 220, and the testing device 24 has a single channel interface 240. The multi-channel electronic switch 26 is connected to the multi-channel interface 220 of the electronic device 22 by a multi-channel connection cable 230. The multi-channel electronic switch 26 is connected to the single-channel interface 240 of the test device 24 by a single-channel connection cable 250, which is more The circuit electronic switch 26 is used to control each of the channels in the multi-channel interface 220 to communicate with the single channel interface 240 one by one.

The multiplex electronic switch 26 includes a multi-channel interface 262, a single channel interface 264, a sound collection unit 266, and a control unit 268 coupled to each of the above.

The sound collecting unit 262 is configured to collect sound signals, perform sound and electric conversion, and generate sound and electric signals, and the sound and electric signals may be voltage signals or current signals.

The control unit 268 is configured to communicate each channel in the multi-channel interface 262 one by one with the single channel interface 264 according to the acoustic signal, that is, to connect each channel of the multi-channel interface 220 to the single channel interface 240 one by one. The control unit 268 includes a comparison module 272 and a switching module 274. The comparison module 272 is configured to compare the acoustic signal with a preset threshold to generate a trigger signal, where the preset threshold is a voltage or current amplitude corresponding to the sound signal generated by the sound collection unit 262. The switching module 274 is configured to switch the communication between the respective channels in the multi-channel interface 220 and the single-channel interface 240 one by one.

The multi-way electronic switch 26 is used as an intermediary for connecting the electronic device 22 to be tested and the testing device 24, and the plurality of channels of the electronic device 22 to be tested are connected to the testing device 24 one by one by the channel switching inside the multiplexed electronic switch 26. Compared with the channel switching mode of the previous replacement interface, the test operation is more convenient. The test time is saved, and the physical damage of the interface of the test device 24 due to insertion and removal is avoided.

Please refer to FIG. 4 , which is a functional block diagram of a multi-channel electronic switch 36 according to another preferred embodiment, including: a multi-channel interface 362 , a single channel interface 364 , a sound collection unit 366 , a storage unit 368 , a control unit 370 , Maintenance unit 372.

The sound collecting unit 366 is configured to collect sound signals, perform sound and electric conversion, and generate sound and electric signals.

The storage unit 368 is configured to store reference audio material.

The control unit 370 is configured to analyze the acoustic signal generated by the sound collection unit 366 and the reference audio data in the storage unit 368, and control each channel in the multi-channel interface 362 to communicate with the single channel interface 364 one by one according to the analysis result. The control unit 370 includes an identification module 382, an analysis module 384, an instruction generation module 386, and a switching module 388. The identification module 382 is configured to convert the audio and video signals generated by the sound collection unit 366 into audio data; the analysis module 384 is configured to compare the audio data generated by the identification module 382 with the reference audio data in the storage unit 368. Determining whether the two match (ie, voice recognition), and generating a control signal when the match occurs; the command generation module 386 is configured to generate a switch instruction according to the control signal, and send the switch command to the switch module 388; the switch module 388 is used to respond The switching instructions control each channel in the multi-channel interface 362 to communicate with the single channel interface 364 one by one.

The maintenance unit 372 is configured to update the audio data generated by the recognition module 382 into the storage unit 368 as a new reference audio material. So the test operator can The voice is recorded in the storage unit 368. When testing, only its own voice can control the switching of the multi-way electronic switch 36, which not only appears personalized, but also can achieve the function of password protection. The initial reference audio data in the storage unit 368 is the minimum required reference, that is, different users can emit a substantially similar sound to meet the requirements, and the switch switching function is driven.

The multi-way electronic switch 26 or 36 can also be integrated into the test device. Taking the multi-circuit electronic switch 26 as an example, referring to FIG. 5, the test device 44 includes a multi-way electronic switch 26 and a test module 28. The multi-channel interface 262 of the multi-way electronic switch 26 is used to connect to the multi-channel interface 220 of the electronic device 22 to be tested, and the single-channel interface 264 of the multi-circuit electronic switch 26 is used to connect to the single-channel interface 282 of the test module 28. The test module 28 is configured to communicate with the electronic device 22 by the multi-way electronic switch 26 and perform corresponding tests.

When the test device 44 is used to test the multi-channel interface, frequent insertion and removal operations are not required, and the test of the plurality of channels can be switched by sound, which is convenient and quick.

It is to be understood by those skilled in the art that the above embodiments are only intended to illustrate the invention, and are not intended to limit the invention, as long as it is within the spirit of the invention Changes and modifications are intended to fall within the scope of the invention.

26‧‧‧Multiple electronic switches

268‧‧‧Control unit

262‧‧‧Multichannel interface

272‧‧‧Comparative Module

264‧‧‧Single channel interface

274‧‧‧Switching module

266‧‧‧Sound acquisition unit

Claims (6)

A multi-channel electronic switch is connected to an electronic device to be tested and a testing device by a connecting cable, and the improvement is that the multi-channel electronic switch comprises a multi-channel interface, a single channel interface, a sound collecting unit and a control unit, and the The channel interface is connected to the multi-channel interface of the electronic device to be tested, and the single channel interface is used for connecting with the testing device, and the sound collecting unit is configured to collect sound signals, perform acoustic-electrical conversion, and generate acoustic and electrical signals; Converting the generated acoustic signal into audio data, and then comparing the audio data with the pre-stored reference audio data, and switching each channel in the multi-channel interface of the electronic switch one by one with the single when the two match The communication of the channel interface further connects the multi-channel interface of the electronic device to the test device one by one, and the control unit is further configured to replace the pre-stored reference audio data with the generated audio data as the new reference audio data, where the initial pre-stored data is used. The baseline audio data is the minimum required benchmark. The multi-channel electronic switch of claim 1, wherein the multi-channel electronic switch further comprises a storage unit for pre-storing the reference audio data; the control unit comprises: an identification module, an analysis module, and an instruction generation The module and the switching module are configured to convert the sound and electric signal generated by the sound collecting unit into audio data; the analyzing module is configured to use the audio data generated by the identification module and the reference audio pre-stored in the storage unit The data is compared and analyzed, and a control signal is generated; the command generation module is configured to generate a switching instruction according to the control signal, and send the switching instruction to the switching module; the switching module is configured to switch back to the command control Each of the plurality of channel interfaces is in communication with the single channel interface one by one. The multi-way electronic switch of claim 2, wherein the multi-way electronic switch further comprises a maintenance unit, configured to update the identification module to generate audio data into the storage unit, to replace the pre-stored reference audio data. As a new benchmark audio material. a test device for connecting to an electronic device to be tested by a connection cable, the test device comprising a test unit for testing a communication interface in the electronic device, wherein the test device further comprises a multi-channel electronic switch, The multi-channel electronic switch comprises a multi-channel interface, a single-channel interface, a sound collecting unit and a control unit, and the multi-channel interface is used for connecting with a multi-channel interface of the electronic device to be tested; the single channel interface is used for connecting with the test unit; The collecting unit is configured to collect sound signals for sound and electric conversion to generate sound and electric signals; the control unit is configured to convert the generated sound and electric signals into audio data, and then compare the audio data with the pre-stored reference audio data, and Switching between the channels of the multi-channel interface and the single-channel interface when the two match, the control unit is further configured to replace the pre-stored reference audio data with the generated audio data as the new reference audio data, where Pre-stored reference audio data is the minimum required benchmark. The test device of claim 4, wherein the test device further comprises a storage unit for pre-storing reference audio data; the control unit comprises: an identification module, an analysis module, an instruction generation module, and a switching module The identification module is configured to convert the sound and electric signal generated by the sound collection unit into audio data; the analysis module is configured to compare the audio data generated by the identification module with the reference audio data prestored in the storage unit. And generating a control signal; The command generation module is configured to generate a switching instruction according to the control signal, and send the switching instruction to the switching module. The switching module is configured to control the switching instruction to control each channel in the multi-channel interface to communicate with the single channel interface one by one. The test device of claim 5, wherein the test device further comprises a maintenance unit, configured to update the identification module to generate audio data into the storage unit, to replace the pre-stored reference audio data as a new reference. Audio material.