CN109921862B - Test method, test device and test system - Google Patents
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Abstract
A test method, a test device and a test system are provided. The controller is used to match with a signal generator for testing. The controller receives a plurality of test requests of a plurality of devices to be tested respectively. The controller selects one of a plurality of test frequencies and a plurality of signal strengths included in the test request as a test item, generates notification information based on the test item, and broadcasts the notification information to the device under test, so that the device under test which sends the test request including the test item performs frequency locking. The controller drives the signal generator to generate a test signal corresponding to the test item and transmits the test signal to the device to be tested.
Description
Technical Field
The present invention relates to a test architecture, and more particularly, to a test method, a test apparatus and a test system.
Background
With the continuous change of wireless technology, RF (Radio Frequency) testing has become a daily routine work for engineers in the mobile communication industry today. Testing time is an important factor for mobile terminal devices, and manufacturers are constantly seeking ways to reduce testing time and associated costs. Generally, when testing the Rx function of the device under test, it is required to test multiple frequencies and signal strengths, such as high frequency/low energy, medium frequency/high energy, low frequency/high energy, etc.
The conventional test methods include the following two methods. The first Test method is to use three signal generators to simultaneously transmit a high frequency signal, an intermediate frequency signal and a low frequency signal to a Device Under Test (DUT) so that the DUT is sequentially frequency-locked for verification. The second test method is that a signal generator is matched with a device to be tested, the signal generator can generate corresponding frequency signals/signal intensity according to the frequency points to be tested of the equipment to be tested, and the equipment to be tested is frequency-locked after the signals are generated so as to carry out verification.
However, the first test method requires a plurality of signal generators, is difficult to install in an environment, and requires a splitter (splitter) having a high isolation degree in order to prevent interference between signals. And the number of signal generators required is related to the number of frequency points to be tested. In addition, the number of signal generators in the second test mode is related to the number of devices to be tested, so that when the number to be tested is larger, more signal generators are needed, resulting in higher setting cost.
Disclosure of Invention
The invention provides a test method, a test device and a test system, which utilize a signal generator to carry out frequency locking verification.
The test method comprises the following steps: respectively receiving a plurality of test requests from a plurality of devices to be tested, wherein each device to be tested is connected to a signal generator; selecting one of a plurality of test frequencies and a plurality of signal strengths included in the plurality of test requests as a test item, and generating notification information based on the test item; broadcasting (transmitting) notification information to the plurality of devices under test so that the plurality of devices under test that send the plurality of test requests including the test items perform frequency locking; and driving the signal generator to generate a test signal corresponding to the test item and transmitting the test signal to the plurality of devices under test.
In an embodiment of the present invention, the testing method further includes: storing the received test request into a queue to be processed; after driving the signal generator to generate a test signal corresponding to the test item and transmitting the test signal to the device under test, deleting one of the selected test frequencies or signal strengths from the queue to be processed; selecting another one of the plurality of test frequencies and the plurality of signal strengths left in the queue to be processed as a test item, and regenerating another notification message based on the test item; rebroadcasting another notification message to the plurality of devices under test; and re-driving the signal generator to generate a test signal corresponding to the test item and transmitting the test signal to the plurality of devices under test.
In an embodiment of the present invention, the step of selecting one of the test frequencies and the signal strengths included in the test requests as the test item includes: determining to select one of the plurality of test frequencies and the plurality of signal strengths as a test item based on a First In First Out (FIFO) algorithm.
In an embodiment of the present invention, the step of selecting one of the test frequencies and the signal strengths included in the test requests as the test item includes: calculating the respective request numbers of the plurality of test frequencies and the plurality of signal strengths; and selecting one of the test frequencies or signal strengths with the largest number of requests as the test item.
In an embodiment of the present invention, the step of selecting one of the test frequencies and the signal strengths included in the test requests as the test item includes: calculating the respective request numbers of the plurality of test frequencies and the plurality of signal strengths; calculating respective weights of the plurality of test frequencies and the plurality of signal strengths based on the number of requests and the receiving time differences corresponding to the plurality of test frequencies and the plurality of signal strengths; one of the test frequencies or signal strengths with the highest weight is selected as a test item.
The test device of the present invention includes: a signal generator and a controller. The signal generator is coupled to a plurality of devices under test. The controller is coupled to the signal generator and receives a plurality of test requests from the plurality of devices under test through the communication device. The controller selects one of a plurality of test frequencies and a plurality of signal strengths included in the plurality of test requests as a test item, generates notification information based on the test item, and broadcasts the notification information to the plurality of devices under test through the communication device, so that the plurality of devices under test which send the plurality of test requests including the test item perform frequency locking; the controller drives the signal generator to generate a test signal corresponding to the test item and transmits the test signal to the plurality of devices under test.
In an embodiment of the present invention, the testing apparatus further includes: a signal distributor. The signal distributor comprises a receiving terminal and a plurality of output terminals, wherein the receiving terminal is coupled to the signal generator, and the output terminals are respectively coupled to the devices to be tested.
The test system of the present invention comprises: the device under test system comprises a plurality of devices under test, a signal generator and a controller. The signal generator is coupled to the plurality of devices under test. The controller is coupled to the signal generator and receives a plurality of test requests from the plurality of devices under test through the communication device. The controller selects one of a plurality of test frequencies and a plurality of signal strengths included in the plurality of test requests as a test item, generates notification information based on the test item, and broadcasts the notification information to the plurality of devices under test through the communication device, so that the plurality of devices under test which send the plurality of test requests including the test item perform frequency locking; the controller drives the signal generator to generate a test signal corresponding to the test item and transmits the test signal to the plurality of devices under test.
Based on the above, the controller is used to cooperate with one signal generator to perform testing, the controller receives the testing requests of the device to be tested, schedules the testing requests, and then enables the signal generator to generate corresponding signals according to the scheduling. Therefore, a plurality of signal generators are not needed, the equipment cost can be saved, and the problem of signal interference among the plurality of signal generators is avoided.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a block diagram of a testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a test system according to an embodiment of the invention;
FIG. 3 is a flow diagram of a testing method according to an embodiment of the invention;
FIG. 4 is a diagram illustrating a FIFO based scheduling method according to an embodiment of the invention;
FIG. 5 is a diagram illustrating a scheduling method based on the number of requests according to an embodiment of the invention. .
Detailed Description
The present application provides a framework that can be applied to multiple testing frequency points and multiple devices under test by using one signal generator, and the required testing time is the same as the traditional mode. In order to make the content of the present invention more clear, the following specific examples are given as examples according to which the present invention can be actually implemented.
FIG. 1 is a block diagram of a testing apparatus according to an embodiment of the present invention. The test apparatus 100 includes a signal generator 110, a controller 120, a signal distributor 130, and a communication device 140. The signal distributor 130 is, for example, a splitter. The communication device 140 is, for example, a network card, a WiFi chip, a mobile communication chip, a bluetooth module, etc. The signal generator 110 is coupled to a plurality of devices under test. The controller 120 is coupled to the signal generator 110 and the communication device 140, and receives a plurality of test requests from a plurality of devices under test through the communication device 140, respectively. The signal distributor 130 includes a receiving terminal coupled to the signal generator 110 and a plurality of output terminals coupled to the device under test.
In the embodiment, the controller 120 and the signal generator 110 are integrated into the testing apparatus 100, however, in other embodiments, the controller 120 may be disposed on another host.
The controller 120 is, for example, a Central Processing Unit (CPU), a Graphic Processing Unit (GPU), a Physical Processing Unit (PPU), a programmable Microprocessor (Microprocessor), an embedded control chip, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), or other similar devices. The controller 120 reads a code segment in a storage device (not shown) to execute the test method. The storage device is, for example, any type of fixed or removable Random Access Memory (RAM), Read-Only Memory (ROM), Flash Memory (Flash Memory), Secure Digital Card (SD), hard disk, or other similar device or combination of devices.
FIG. 2 is a diagram of a test system according to an embodiment of the invention. Referring to fig. 2, the test system 200 includes a signal generator 110, a controller 120, a signal distributor 130, and a plurality of devices under test 210. Here, 4 devices under test 210_ a to 210_ D are used for description, but not limited thereto. The signal generator 110 transmits the test signal to the dut 210_ a to 210_ D through the signal distributor 130. With the test system 200, the following describes the steps of the test method in detail by way of an example.
FIG. 3 is a flow chart of a testing method according to an embodiment of the invention. Referring to fig. 2 and 3, in step S305, the controller 120 receives a plurality of test requests from the devices under test 210_ a to 210_ D, respectively. That is, the devices under test 210_ a to 210_ D respectively transmit the test requests to the controller 120 through the communication device 140. For example, the dut 210_ a to 210_ D may communicate with the controller 120 through a wired network, a wireless network, or a transmission line.
Next, in step S310, the controller 120 selects one of a plurality of test frequencies and a plurality of signal strengths included in the test request as a test item, and generates notification information based on the test item. In other words, the controller 120 schedules the test frequencies and signal strengths and determines the test items based on the scheduling.
Thereafter, in step S315, the controller 120 broadcasts notification information to the device under test 210 through the communication device 140. That is, the controller 120 notifies all the devices under test 210_ a to 210_ D by the notification information, so that the devices under test 210_ a to 210_ D can know which frequency or which intensity to transmit next according to the notification information. If the test item in the notification message is one of the test frequencies sent by the device under test 210_ a, the device under test 210_ a performs frequency locking.
Then, in step S320, the controller 120 drives the signal generator 110 to generate a test signal corresponding to the test item, and transmits the test signal to the device under test. For example, if the device under test 210_ a sends a test request with a specified frequency as a test item, the device under test 210_ a performs frequency locking to lock the specified frequency after receiving the notification message. At this time, since the device under test 210_ a is already frequency-locked, the device under test 210_ a is tested at the designated frequency. The device under test (or the host controlling the device under test 210_ a) reads parameters such as Bit Error Rate (BER), power level (power level), and frequency accuracy for testing.
In addition, the controller 120 stores the received test request in a pending queue. After the driving signal generator 110 generates the test signal corresponding to the test item and transmits the test signal to the device under test 210, the controller 120 deletes the test frequency or the signal strength that has been selected as the test item from the pending queue, selects another one of the test frequency and the signal strength that remain in the pending queue as the test item, regenerates another notification message based on the test item, and rebroadcasts another notification message to the device under test 210; and re-driving the signal generator 110 to generate a test signal corresponding to the test item and transmitting the test signal to the device under test 210. The controller 120 will select one of the test items from the pending queue until there are no items included in the test request in the pending queue.
In the embodiment, the test items may be determined based on a First In First Out (FIFO) algorithm, or based on the number of requests, or calculated as a weight or priority. The following examples are given by way of illustration. For convenience of explanation, the following embodiments will be described by taking the example that the test request includes the test frequency. However, in other embodiments, the test request may include both the test frequency and the signal strength or the test request may include only the signal strength, and the scheduling method is the same as that of the following embodiments and is not repeated herein.
FIG. 4 is a diagram illustrating a first-in-first-out algorithm based scheduling method according to an embodiment of the invention. In the embodiment, at the time point T1, the controller 120 receives the test request REQ _ a (F1, F2) of the device under test 210_ a and stores the test request REQ _ a (F1, F2) in the pending queue. At this time, the test frequencies F1 and F2 are included in the queue to be processed, so the controller 120 can use the test frequency F1 or the test frequency F2 as the test items. Here, the test frequency F1 is the most preferred, but not limited to this. Therefore, at the time point T2, the controller 120 uses the test frequency F1 as the test item.
Next, at a time point T2, the controller 120 receives the test request REQ _ B of the device under test 210_ B (F3), and stores the test request REQ _ B (F3) in the pending queue. At the time point T2, the controller 120 uses the test frequency F1 as a test item, and further drives the signal generator 110 to generate a test signal corresponding to the test frequency F1.
Thereafter, at a time point T3, the controller 120 receives the test request REQ _ C (F1) of the device under test 210_ C and the test request REQ _ D (F1) of the device under test 210_ D, and stores the test requests REQ _ C (F1) and REQ _ D (F1) in the pending queue. And, at the time point T3, the controller 120 drives the signal generator 110 to generate the test signal corresponding to the test frequency F2.
Then, at the time point T4, the controller 120 uses the test frequency F3 as the test item according to the fifo rule, and further drives the signal generator 110 to generate the test signal corresponding to the test frequency F3. At time T5, the controller 120 drives the signal generator 110 to generate a test signal corresponding to the test frequency F1. And the test of all the test requests is completed at a time point T5.
In addition, the request number of each test frequency can be calculated, and one test frequency with the largest request number can be selected as the test item.
For example, fig. 5 is a diagram illustrating a scheduling manner based on the number of requests according to an embodiment of the invention. At a time point T1, the controller 120 receives the test request REQ _ a of the device under test 210_ a (F1, F2). The pending queue includes the test frequencies F1 and F2, the number of requests of which is 1, so the priority of the two test frequencies is the same, and the test frequency F1 is the most priority, but not limited thereto. Therefore, at the time point T2, the controller 120 uses the test frequency F1 as the test item.
At time T2, the controller 120 further receives the test request REQ _ B from the device under test 210_ B (F3). At this time, the pending queue includes the test frequencies F2 and F3, and the number of requests is 1, so the priority of the two test frequencies is the same, and the test frequency F2 is the most priority, but not limited thereto. Therefore, at the time point T3, the controller 120 uses the test frequency F2 as the test item.
At the time point T3, the controller 120 further receives the test request REQ _ C of the device under test 210_ C (F1) and the test request REQ _ D of the device under test 210_ D (F1). At this time, the pending queue includes test frequencies F3 and F1, where the number of requests of the test frequency F3 is 1 and the number of requests of the test frequency F1 is 2. Therefore, the controller 120 takes the test frequency F1 as the top priority and takes the test frequency F1 as the test item at the time point T4. Thereafter, at a time point T5, the controller 120 takes the test frequency F3 as a test item.
In addition, in the case that the number of requests is the same, the selection may be further performed based on the first-in first-out principle, but is not limited herein.
In addition, the number of requests for each test frequency may be further calculated, and the weight of each test frequency may be calculated based on the number of requests and the reception time difference corresponding to each test frequency, and then one of the test frequencies with the highest weight may be selected as the test item. For example, the weight is reception time difference × 2+ number of requests.
Tables 1-3 illustrate a weight-based scheduling method according to an embodiment of the present invention. Tables 1 to 3 represent the scheduling of time points T2 to T4, respectively.
TABLE 1
TABLE 2
TABLE 3
In table 1, at the time point T2, the controller 120 first uses the test frequency F1 as the test item, and then calculates the respective weights of the test frequencies F2 and F3. Assuming that the time difference between the time point T2 and the time point T1 is 1, the weight of the test frequency F2 is 3. And the test frequency F3 has a weight of 1. Since the weight of the test frequency F2 is greater than that of the test frequency F3, the controller 120 uses the test frequency F2 as the test item at the next time point (i.e., the time point T3).
In table 2, as described above, the controller 120 uses the test frequency F2 as the test item at the time point T3, and then calculates the respective weights of the test frequencies F3 and F1. Assuming that the time difference between the time point T3 and the time point T2 is 1, the weight of the test frequency F3 is 3. And the weight of the test frequency F3 after recalculation is 3. The number of requests for the test frequency F1 is 2, so its weight is 2. Since the weight of the test frequency F3 is greater than that of the test frequency F1, the controller 120 uses the test frequency F3 as the test item at the next time point (i.e., the time point T4).
In table 3, as described above, the controller 120 takes the test frequency F3 as the test item at the time point T4, and then calculates the weight of the test frequency F1. Assuming that the time difference between the time point T3 and the time point T2 is 1, the weight of the recalculated test frequency F1 is 4. Thereafter, at a time point T5, the controller 120 takes the test frequency F1 as a test item.
In summary, the present invention adds a controller to receive the test requests sent by the dut, schedules the test requests, and then enables the signal generator to generate the corresponding signals according to the schedule. Therefore, only one signal generator is needed, so that the problem of mutual interference of signals among a plurality of signal generators is avoided when the environment is erected, and the equipment cost is further saved.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A method of testing, comprising:
receiving a plurality of test requests from a plurality of devices to be tested respectively, wherein the devices to be tested are connected to the same signal generator;
selecting one of a plurality of test frequencies and a plurality of signal strengths included in the plurality of test requests as a test item, and generating notification information based on the test item;
broadcasting the notification information to the multiple devices to be tested so that the multiple devices to be tested which send the multiple test requests including the test items perform frequency locking; and
driving the signal generator to generate a test signal corresponding to the test item and transmitting the test signal to the plurality of devices under test,
wherein the step of selecting one of the plurality of test frequencies and the plurality of signal strengths included in the plurality of test requests as the test item comprises:
calculating the respective request numbers of the plurality of test frequencies and the plurality of signal strengths;
calculating respective weights of the plurality of test frequencies and the plurality of signal strengths based on the request numbers and the receiving time differences corresponding to the plurality of test frequencies and the plurality of signal strengths; and
selecting one of the test frequencies or the signal strengths with the highest weight as the test item.
2. The test method of claim 1, further comprising:
storing the received test requests into a queue to be processed;
deleting the selected one of the plurality of test frequencies and the plurality of signal strengths from the queue to be processed after driving the signal generator to generate the test signal corresponding to the test item and transmitting the test signal to the plurality of devices under test;
selecting another one of the plurality of test frequencies and the plurality of signal strengths remaining in the queue to be processed as the test item, and regenerating another notification message based on the test item;
rebroadcasting the other notification information to the plurality of devices under test; and
and re-driving the signal generator to generate the test signal corresponding to the test item, and transmitting the test signal to the plurality of devices under test.
3. The method according to claim 1, wherein the step of selecting one of the plurality of test frequencies and the plurality of signal strengths included in the plurality of test requests as the test item comprises:
determining to select one of the plurality of test frequencies and the plurality of signal strengths as the test item based on a first-in-first-out algorithm.
4. The method according to claim 1, wherein the step of selecting one of the plurality of test frequencies and the plurality of signal strengths included in the plurality of test requests as the test item comprises:
calculating the respective request numbers of the plurality of test frequencies and the plurality of signal strengths; and
selecting one of the test frequency or the signal strength with the largest number of the requests as the test item.
5. A test apparatus, comprising:
a signal generator coupled to a plurality of devices under test; and
a controller coupled to the signal generator and receiving a plurality of test requests from the plurality of devices under test through a communication device, respectively;
wherein the controller selects one of a plurality of test frequencies and a plurality of signal strengths included in the plurality of test requests as a test item, generates notification information based on the test item, and broadcasts the notification information to the plurality of devices under test through the communication device, so that the plurality of devices under test that transmit the plurality of test requests including the test item perform frequency locking; the controller drives the signal generator to generate a test signal corresponding to the test item and transmits the test signal to the plurality of devices under test,
wherein the controller calculates a number of requests for each of the plurality of test frequencies and the plurality of signal strengths, calculates weights for each of the plurality of test frequencies and the plurality of signal strengths based on the number of requests for each of the plurality of test frequencies and the plurality of signal strengths and a reception time difference, and selects one of the test frequencies or the signal strengths with the highest weight as the test item.
6. The testing device of claim 5, further comprising:
the signal distributor comprises a receiving terminal and a plurality of output terminals, wherein the receiving terminal is coupled to the signal generator, and the output terminals are respectively coupled to the devices to be tested.
7. The test apparatus as claimed in claim 5, wherein the controller stores the received test requests in a queue to be processed, and after driving the signal generator to generate the test signal corresponding to the test item and transmit the test signal to the devices under test, the controller deletes the selected one of the test frequencies and the signal strengths from the queue to be processed; the controller selects another one of the test frequencies and the signal strengths remaining in the queue to be processed as the test item, regenerates another notification message based on the test item, and rebroadcasts the another notification message to the devices to be tested; the controller re-drives the signal generator to generate the test signal corresponding to the test item and transmits the test signal to the plurality of devices under test.
8. The test apparatus as claimed in claim 5, wherein the controller determines to select one of the plurality of test frequencies and the plurality of signal strengths as the test item based on a first-in-first-out algorithm.
9. The test apparatus of claim 5, wherein the controller calculates a number of requests for each of the plurality of test frequencies and the plurality of signal strengths, and selects one of the test frequencies or the signal strengths with the largest number of requests as the test item.
10. A test system, comprising:
a plurality of devices under test;
a signal generator coupled to the plurality of devices under test; and
a controller coupled to the signal generator and receiving a plurality of test requests from the plurality of devices under test through a communication device, respectively;
wherein the controller selects one of a plurality of test frequencies and a plurality of signal strengths included in the plurality of test requests as a test item, generates notification information based on the test item, and broadcasts the notification information to the plurality of devices under test through the communication device, so that the plurality of devices under test that transmit the plurality of test requests including the test item perform frequency locking; the controller drives the signal generator to generate a test signal corresponding to the test item and transmits the test signal to the plurality of devices under test,
wherein the controller calculates a number of requests for each of the plurality of test frequencies and the plurality of signal strengths, calculates weights for each of the plurality of test frequencies and the plurality of signal strengths based on the number of requests for each of the plurality of test frequencies and the plurality of signal strengths and a reception time difference, and selects one of the test frequencies or the signal strengths with the highest weight as the test item.
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| TW201926927A (en) | 2019-07-01 |
| CN109921862A (en) | 2019-06-21 |
| TWI648958B (en) | 2019-01-21 |
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