CN217112604U - Power amplifier's test system - Google Patents
Power amplifier's test system Download PDFInfo
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- CN217112604U CN217112604U CN202123300834.9U CN202123300834U CN217112604U CN 217112604 U CN217112604 U CN 217112604U CN 202123300834 U CN202123300834 U CN 202123300834U CN 217112604 U CN217112604 U CN 217112604U
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Abstract
The utility model provides a power amplifier's test system, this system includes: the power distribution unit PDU is used for supplying power to the constant temperature and humidity box, the programmable power supply and the acquisition card, and the upper computer is used for setting a preset temperature and a preset humidity in the constant temperature and humidity box, a preset current and a preset voltage provided for a target power amplifier to be tested and a preset range of audio signal distortion; the constant temperature and humidity box is used for providing stable preset temperature and humidity for the target power amplifier; the programmable power supply is used for providing stable preset current and preset voltage for the target power amplifier; the acquisition card is in communication connection with the target power amplifier through the PCIE interface and is used for feeding back the acquired audio signal of the target power amplifier to the upper computer, so that the upper computer can judge whether the audio signal is abnormal or not according to the preset range of audio signal distortion, and then the target power amplifier is tested, and therefore the testing efficiency and the accuracy of the target power amplifier are improved.
Description
Technical Field
The utility model relates to a computer technology field especially relates to a power amplifier's test system.
Background
A power amplifier (i.e. a power amplifier) is an important component of a transmitting device in a communication system, and is widely used in life and production, and is used for amplifying power of a signal.
The power amplifier test is an important link for ensuring that the product performance meets the customer requirement index and reducing the delivery of defective products in the production process of the power amplifier, and is an important means for verifying the product performance. Therefore, the high-efficiency power amplifier testing method can improve the shipment speed and improve the verification efficiency. However, the conventional common direct test method has low efficiency, artificial errors in test parameters and low test efficiency and accuracy.
Therefore, how to improve the testing efficiency and accuracy of the power amplifier is a technical problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a testing system for a power amplifier, which can test whether the power amplifier fails more quickly and accurately.
The embodiment of the utility model provides a power amplifier's test system, the system includes: the device comprises a constant temperature and humidity box, a programmable power supply, a power distribution unit PDU, an acquisition card and an upper computer;
the power distribution unit PDU is used for supplying power to the constant temperature and humidity box, the programmable power supply and the acquisition card;
the upper computer is used for setting a preset temperature and a preset humidity in the constant temperature and humidity box, a preset current and a preset voltage provided for a target power amplifier to be tested and a preset range of audio signal distortion;
the constant temperature and humidity box is used for providing stable preset temperature and preset humidity for the target power amplifier;
the programmable power supply is used for providing stable preset current and preset voltage for the target power amplifier;
the acquisition card is in communication connection with the target power amplifier through a PCIE interface and is used for feeding back the acquired audio signal of the target power amplifier to the upper computer, so that the upper computer can judge whether the audio signal of the target power amplifier is abnormal or not according to the preset range of audio signal distortion, and further test of the target power amplifier is achieved, and a test result is obtained.
In one possible implementation manner, the power distribution unit PDU is further configured to receive a power supply instruction of the upper computer, and respond to the power supply instruction to sequentially supply power to the constant temperature and humidity chamber, the programmable power supply, and the acquisition card.
In a possible implementation, the preset temperature and the preset humidity are 85 degrees and 75%, respectively.
In a possible implementation, the preset current and the preset voltage are 14V and 2A, respectively.
In a possible implementation manner, the preset range of the audio signal distortion is a 1% error range of a standard sine wave.
In a possible implementation manner, when the upper computer determines that the audio signal of the target power amplifier is abnormal according to the preset range of the audio signal distortion, the system further includes:
the constant temperature and humidity box acquires the temperature and the humidity of the target power amplifier within a preset time before and after a fault occurs, and feeds the temperature and the humidity back to the upper computer;
the programmable power supply acquires current and voltage of the target power amplifier within preset time before and after a fault occurs, and feeds the current and voltage back to the upper computer;
the acquisition card acquires audio signals of the target power amplifier within preset time before and after a fault occurs, and feeds the audio signals back to the upper computer;
and the upper computer is used for generating a fault record report according to the temperature, the humidity, the current, the voltage and the audio signal.
In a possible implementation, the preset time is 10 seconds.
In a possible implementation manner, after the testing of the target power amplifier is implemented and the test result is obtained, the system further includes:
and the power distribution unit PDU is used for powering off the programmable power supply and then powering off the constant temperature and humidity box and the acquisition card.
The embodiment of the utility model provides a power amplifier's test system, this system includes constant temperature and humidity case, programmable power supply, power distribution unit PDU, collection card, host computer, wherein, power distribution unit PDU is used for supplying power for constant temperature and humidity case, programmable power supply, collection card, and the host computer is used for setting up the preset temperature and the preset humidity in the constant temperature and humidity case, the preset electric current and the preset voltage that provide for the target power amplifier of awaiting measuring and waiting, and the preset scope of audio signal distortion; the constant temperature and humidity box is used for providing stable preset temperature and preset humidity for the target power amplifier; the programmable power supply is used for providing stable preset current and preset voltage for the target power amplifier; the acquisition card is in communication connection with the target power amplifier through the PCIE interface and is used for feeding back the acquired audio signal of the target power amplifier to the upper computer, so that the upper computer can judge whether the audio signal of the target power amplifier is abnormal or not according to the preset range of the audio signal distortion, further realizing the test of the target power amplifier and obtaining the test result, therefore, the test system adopted by the embodiment of the utility model, after the power amplifier to be tested is placed in the constant temperature and humidity box of the system, the temperature and the humidity can be automatically controlled by using the constant temperature and humidity box of the system, the audio signal of the power amplifier to be tested is collected in real time by using the acquisition card for fault analysis, and the power is automatically cut off in sequence after the test is finished, therefore, the efficiency and the accuracy of the power amplifier test are further improved on the basis of ensuring the safety in the test process and protecting the product from being damaged by external force.
Drawings
In order to clearly illustrate the detailed implementation of the embodiments of the present invention, the drawings used in describing the detailed implementation will be briefly described below. It should be apparent that these drawings are only a part of the drawings of the embodiments of the present invention, and those skilled in the art can also obtain other drawings without inventive efforts.
Fig. 1 is a block diagram of a LabVIEW-based contact resistance testing system according to an embodiment of the present invention;
fig. 2 is a block diagram of a test system for a power amplifier according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the technical solution provided by the present invention, the following is a simple description of the research background of the technical solution of the present invention.
With the rapid development of computer technology, more and more instrument and meter scenes need to apply the computer technology to realize virtual instruments, thereby providing convenience for the life of people. The virtual instrument is a brand-new instrument system virtual instrument which takes a computer as an instrument unified hardware platform, fully utilizes basic intelligent functions of the computer, such as operation, storage, playback, calling, display, file management and the like, which are unique, and simultaneously combines the specialized functions of the traditional instrument and the panel control into software to be integrated with the computer, thereby forming a brand-new instrument system virtual instrument which is completely consistent with the traditional hardware instrument from appearance to function and fully enjoys computer intelligent resources.
For example, as shown in fig. 1, a contact resistance testing system based on LabVIEW is shown, the system includes a contact resistance testing system, a testing board and a testing system are arranged on the contact resistance testing system, a constant current source, an AD collector, a control switch and an RS232 interface are arranged on the testing board, an RS232 interface, a CPU, a window communication module, a testing controller, a database memory, a data processor and a display module are arranged on the testing system, a VGA interface, a USB interface and an RJ45 interface are arranged at one side edge of the testing system, the VGA interface is connected with a liquid crystal screen, the USB interface is connected with a keyboard and a mouse, the testing system has real-time monitoring, calculating, analyzing and displaying capabilities, and has real-time data storage capabilities.
On this basis, receive the inspiration of the system that tests the contact resistance in figure 1, when testing to current power amplifier, only judge the mode that whether power amplifier breaks down (or high quality low) through tester's hearing, the efficiency of software testing that leads to is low, test parameter human error (this is because every tester's judgement standard differs), problem that efficiency of software testing and rate of accuracy are not high, the utility model provides a power amplifier's test system based on LabVIEW or VB's programming language is constructed to on the basis of the security of ensureing in the test procedure and protection product do not receive external force to damage, test out power amplifier and whether break down more fast and accurately.
In order to make the technical solution of the present invention more clear and understandable, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings.
Referring to fig. 2, a block diagram of a test system for a power amplifier provided in this embodiment is shown in fig. 2, where the system includes: the device comprises a constant temperature and humidity box 202, a programmable Power supply 203, a Power Distribution Unit (PDU for short) 201, an acquisition card 204 and an upper computer 205, wherein the PDU201 is used for supplying Power to the constant temperature and humidity box 202, the programmable Power supply 203 and the acquisition card 204; the upper computer 205 is used for setting a preset temperature and a preset humidity in the constant temperature and humidity chamber 202, a preset current and a preset voltage provided for a power amplifier to be tested (defined as a target power amplifier here), and a preset range of audio signal distortion; the constant temperature and humidity chamber 202 is used for providing stable preset temperature and preset humidity for the target power amplifier; thus, when the target power amplifier is placed in the constant temperature and humidity chamber 202, the programmable power supply 203 can be used to provide a stable preset current and a stable preset voltage for the target power amplifier; the acquisition card 204 is in communication connection with the target power amplifier through a PCIE interface, and is configured to feed back an acquired audio signal of the target power amplifier to the upper computer 205, so that the upper computer 205 determines whether the audio signal of the target power amplifier is abnormal according to a preset range of audio signal distortion set before, and then tests the target power amplifier to obtain a test result.
The target power amplifier is placed in the constant temperature and humidity chamber 202 for testing, which is beneficial to the equipment capable of detecting the performance of the material under various environments in the constant temperature and humidity test chamber and testing the heat resistance, cold resistance, dry resistance and moisture resistance of various materials, so as to ensure the safety in the test process and protect the target power amplifier and other products from being damaged by external force.
In a possible implementation manner of this embodiment, the power distribution unit PDU of this embodiment is further configured to receive a power supply instruction of the upper computer, and sequentially supply power to the constant temperature and humidity chamber, the programmable power supply, and the acquisition card in response to the power supply instruction.
In this implementation, when testing the target power amplifier, a test system in seiping city as shown in fig. 2 needs to be preheated to an operating state first to ensure the safety of the test process. Specifically, firstly, a communication connection between the upper computer 205 and the PDU201 may be established, for example, the PDU01 may be connected through a USB interface, so that after receiving a power supply instruction issued by a worker through the upper computer, the PDU01 responds to the power supply instruction to sequentially supply power to the constant temperature and humidity chamber 202, the programmable power supply 203, and the acquisition card 204, so that the constant temperature and humidity chamber 202 first reaches a preset temperature and a preset humidity set by the upper computer 205, thereby ensuring stability and safety of a test process, and then after supplying power to the target power amplifier by using the programmable power supply 203, the acquisition card 204 acquires an audio signal (such as waveform information of audio) supplied by the target power amplifier during operation, thereby effectively testing the target power amplifier.
In a possible implementation manner of this embodiment, in the embodiment, when the target power amplifier is tested, the upper computer 205 may set the preset temperature and the preset humidity in the constant temperature and humidity chamber 202 to 85 degrees and 75% respectively, set the preset current and the preset voltage provided by the programmable power supply 203 for the target power amplifier to 14V and 2A respectively, and set the preset range of audio signal distortion to be a 1% error range of a standard sine wave, as shown in fig. 2.
In this implementation, when the target power amplifier is placed in the constant temperature and humidity chamber, the upper computer 203 may first set the preset temperature and the preset humidity in the constant temperature and humidity chamber to be 85 degrees and 75 degrees, respectively, set the preset current and the preset voltage provided by the target power amplifier to be tested to be 14V and 2A, respectively, and set the preset range of audio signal distortion to be 1% error range of the standard sine wave, so that, after the upper computer is running, the constant temperature and humidity chamber 203 first reaches a specific temperature and humidity (85 degrees and 75%), then the programmable power supply 203 provides the target power amplifier with a stable voltage source 14V, and the acquisition card 204 acquires the audio signal waveform output by the target power amplifier in real time, and then, determines whether the error between the audio signal waveform output by the target power amplifier and the standard sine wave is within 1%, if yes, the test result of the target power amplifier is that no fault occurs, otherwise, the test result of the target power amplifier is that a fault occurs.
In a possible implementation manner of this embodiment, when the upper computer 205 determines that the audio signal of the target power amplifier is abnormal according to the preset range of the audio signal distortion, further, the temperature and the humidity of the target power amplifier within the preset time (specific values can be set according to actual conditions, for example, can be set to 10 seconds) before and after the occurrence of the fault can be obtained through the constant temperature and humidity box 205, and are fed back to the upper computer 205; meanwhile, the current and the voltage of the target power amplifier within a preset time before and after the fault occurs are obtained through the programmable power supply 203 and fed back to the upper computer 205; and acquiring audio signals of the target power amplifier within a preset time before and after the fault occurs through an acquisition card 204, and feeding back the audio signals to the upper computer 205. In this way, the upper computer 205 can generate a fault record report according to the acquired temperature, humidity, current, voltage, and audio signals of the target power amplifier within the preset time before and after the fault occurs, so as to provide an effective basis for fault diagnosis of the target power amplifier and accurately locate the cause of the fault.
It should be noted that, in order to improve the test safety, an optional implementation manner is that after the test on the target power amplifier is implemented and the test result is obtained, the programmable power supply 203 may be immediately powered off through the PDU201, the target power amplifier is always turned on and off when the output is overheated, and then the constant temperature and humidity box and the acquisition card are powered off to ensure the safety of the whole test process.
To sum up, the utility model provides a power amplifier's test system, this system includes constant temperature and humidity case, programmable power supply, power distribution unit PDU, collection card, host computer, wherein, power distribution unit PDU is used for supplying power for constant temperature and humidity case, programmable power supply, collection card, and the host computer is located the preset temperature and the preset humidity that set up in the constant temperature and humidity case, the preset electric current and the preset voltage that provide for the target power amplifier of awaiting measuring and audio signal distortion the preset scope; the constant temperature and humidity box is used for providing stable preset temperature and preset humidity for the target power amplifier; the programmable power supply is used for providing stable preset current and preset voltage for the target power amplifier; the acquisition card is in communication connection with the target power amplifier through the PCIE interface and is used for feeding back the acquired audio signal of the target power amplifier to the upper computer, so that the upper computer can judge whether the audio signal of the target power amplifier is abnormal or not according to the preset range of the audio signal distortion, further realizing the test of the target power amplifier and obtaining the test result, therefore, the test system adopted by the embodiment of the utility model, after the power amplifier to be tested is placed in the constant temperature and humidity box of the system, the temperature and the humidity can be automatically controlled by using the constant temperature and humidity box of the system, the audio signal of the power amplifier to be tested is collected in real time by using the acquisition card for fault analysis, and the power is automatically cut off in sequence after the test is finished, therefore, on the basis of ensuring the safety in the test process and protecting the product from being damaged by external force, the test efficiency and the accuracy of the power amplifier are further improved.
As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the above embodiment methods can be implemented by software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for enabling a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the method according to the embodiments or some parts of the embodiments.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A test system for a power amplifier, the system comprising: the device comprises a constant temperature and humidity box, a programmable power supply, a power distribution unit PDU, an acquisition card and an upper computer;
the power distribution unit PDU is used for supplying power to the constant temperature and humidity box, the programmable power supply and the acquisition card;
the upper computer is used for setting a preset temperature and a preset humidity in the constant temperature and humidity box, a preset current and a preset voltage provided for a target power amplifier to be tested and a preset range of audio signal distortion;
the constant temperature and humidity box is used for providing stable preset temperature and preset humidity for the target power amplifier;
the programmable power supply is used for providing stable preset current and preset voltage for the target power amplifier;
the acquisition card is in communication connection with the target power amplifier through a PCIE interface and is used for feeding back the acquired audio signal of the target power amplifier to the upper computer, so that the upper computer can judge whether the audio signal of the target power amplifier is abnormal or not according to the preset range of audio signal distortion, and further test of the target power amplifier is achieved, and a test result is obtained.
2. The test system of claim 1, wherein the power distribution unit PDU is further configured to receive a power supply instruction of the upper computer, and in response to the power supply instruction, sequentially supply power to the constant temperature and humidity chamber, the programmable power supply, and the acquisition card.
3. The test system of claim 1, wherein the preset temperature and preset humidity are 85 degrees and 75%, respectively.
4. The test system of claim 1, wherein the predetermined current and voltage are 14V and 2A, respectively.
5. The test system of claim 1, wherein the predetermined range of audio signal distortion is a 1% error range of a standard sine wave.
6. The testing system according to any one of claims 1 to 5, wherein when the upper computer determines that the audio signal of the target power amplifier is abnormal according to the preset range of the audio signal distortion, the system further comprises:
the constant temperature and humidity box acquires the temperature and the humidity of the target power amplifier within a preset time before and after a fault occurs, and feeds the temperature and the humidity back to the upper computer;
the programmable power supply acquires current and voltage of the target power amplifier within preset time before and after a fault occurs, and feeds the current and voltage back to the upper computer;
the acquisition card acquires audio signals of the target power amplifier within preset time before and after a fault occurs, and feeds the audio signals back to the upper computer;
and the upper computer is used for generating a fault record report according to the temperature, the humidity, the current, the voltage and the audio signal.
7. The test system of claim 6, wherein the predetermined time is 10 seconds.
8. The test system according to any of claims 1-5, wherein after the test of the target power amplifier is performed and the test result is obtained, the system further comprises:
and the power distribution unit PDU is used for powering off the programmable power supply and then powering off the constant temperature and humidity box and the acquisition card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123300834.9U CN217112604U (en) | 2021-12-23 | 2021-12-23 | Power amplifier's test system |
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| CN202123300834.9U CN217112604U (en) | 2021-12-23 | 2021-12-23 | Power amplifier's test system |
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| CN217112604U true CN217112604U (en) | 2022-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115808614A (en) * | 2023-02-09 | 2023-03-17 | 四川省华盾防务科技股份有限公司 | Power amplifier chip thermal performance monitoring method, system and storage medium |
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2021
- 2021-12-23 CN CN202123300834.9U patent/CN217112604U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115808614A (en) * | 2023-02-09 | 2023-03-17 | 四川省华盾防务科技股份有限公司 | Power amplifier chip thermal performance monitoring method, system and storage medium |
| CN115808614B (en) * | 2023-02-09 | 2023-05-16 | 四川省华盾防务科技股份有限公司 | Power amplifier chip thermal performance monitoring method, system and storage medium |
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