CN110601774A - Wireless transmission efficiency test system and method - Google Patents
Wireless transmission efficiency test system and method Download PDFInfo
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- CN110601774A CN110601774A CN201910827788.6A CN201910827788A CN110601774A CN 110601774 A CN110601774 A CN 110601774A CN 201910827788 A CN201910827788 A CN 201910827788A CN 110601774 A CN110601774 A CN 110601774A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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Abstract
A wireless transmission performance testing system and method are used for testing the wireless transmission performance of an object to be tested. The object to be tested is arranged in the test cavity, and the wireless transmission efficiency test system comprises a directional antenna and an operation device. The directional antenna is arranged in the test cavity and close to the object to be tested, and the signal coupling direction of the directional antenna points to the object to be tested and is used for receiving a test signal generated by the object to be tested through testing. The control device is coupled to the directional antenna and used for receiving the test signal transmitted by the directional antenna, processing the test signal and generating a test result. Compared with the prior art, the invention can test different wireless transmission efficiencies of the object to be tested under specific environmental conditions, such as the condition of being higher or lower than the room temperature. In the test process, the signal coupling direction of the directional antenna points to the object to be tested, and the directional antenna can receive a test signal with good signal-to-noise ratio, so that the control device can generate an accurate test result.
Description
Technical Field
The present invention relates to a test system and method, and more particularly, to a system and method for testing a wireless transmission function of an electronic device.
Background
With the development of communication technology, various electronic devices have wired or wireless communication functions. Before shipment, the wireless transmission performance (i.e., performance) of the electronic device needs to be tested. However, the current testing methods cannot know the performance of the wireless transmission performance of the electronic device in a specific environment such as an extremely cold or hot environment. Therefore, when the product is delivered to a country different from the latitude of the production end, the wireless transmission function of the electronic device may not match the result tested by the production end.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The invention aims to provide a system and a method for testing wireless transmission efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
a wireless transmission efficiency test system is used for testing the wireless transmission efficiency of an object to be tested, the object to be tested is arranged in a test cavity, the wireless transmission efficiency test system comprises:
the directional antenna is arranged in the test cavity and is close to the object to be tested, and the signal coupling direction of the directional antenna points to the object to be tested and is used for receiving a test signal generated by the object to be tested through testing; and
a control device, coupled to the directional antenna, for receiving the test signal transmitted from the directional antenna, processing the test signal and generating a test result;
the material inside the test cavity is metal.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the method further comprises:
an attenuator coupled between the directional antenna and the steering device.
2. In the above scheme, the method further comprises:
and the directional antenna is coupled with the attenuator through the radio frequency signal transmission line.
3. In the above solution, the directional antenna is a plate coupled antenna, and the directional antenna includes a coupling substrate coupled to the control device through a transmission line.
4. In the above scheme, the directional antenna and the object to be measured are separated by a distance, and the distance is 1 ~ 10 mm.
5. In the above scheme, the method further comprises:
an attenuator for adjusting the test signal transmitted from the directional antenna and transmitting the adjusted test signal to the control device; and
and the radio frequency signal transmission line is used for transmitting the test signal output by the directional antenna to the attenuator.
7. In the above scheme, the method further comprises:
and the jig is arranged in the test cavity and used for fixing the directional antenna at a position adjacent to the object to be tested.
8. In the above scheme, an environmental condition inside the test chamber is set through a user interface of the test chamber, so that the object to be tested tests the wireless transmission performance under the environmental condition.
In order to achieve the purpose, the invention adopts the technical scheme that:
a wireless transmission performance testing method for testing the wireless transmission performance of an object to be tested includes:
arranging a directional antenna and the object to be tested in a test cavity, wherein the signal coupling direction of the directional antenna points to the object to be tested;
arranging a control device coupled to the directional antenna;
receiving a test signal of the object to be tested through the directional antenna; and
and receiving the test signal transmitted by the directional antenna through the control device, processing the test signal through the control device and generating a test result.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the method further comprises:
transmitting the test signal output from the directional antenna to an attenuator through a radio frequency signal transmission line; and
and adjusting the test signal transmitted from the directional antenna through the attenuator, and transmitting the adjusted test signal to the control device.
The working principle and the advantages of the invention are as follows:
the invention relates to a wireless transmission efficiency test system and a method thereof, which are used for testing the wireless transmission efficiency of an object to be tested. The object to be tested is arranged in the test cavity, and the wireless transmission efficiency test system comprises a directional antenna and an operation device. The directional antenna is arranged in the test cavity and close to the object to be tested, and the signal coupling direction of the directional antenna points to the object to be tested and is used for receiving a test signal generated by the object to be tested through testing. The control device is coupled to the directional antenna and used for receiving the test signal transmitted by the directional antenna, processing the test signal and generating a test result.
Compared with the prior art, the invention can test different wireless transmission efficiencies of the object to be tested under specific environmental conditions, such as the condition of being higher or lower than the room temperature. In the test process, the signal coupling direction of the directional antenna points to the object to be tested, and the directional antenna can receive a test signal with good signal-to-noise ratio, so that the control device can generate an accurate test result.
Drawings
Fig. 1 is a first block diagram of a wireless transmission performance testing system according to an embodiment of the present invention;
fig. 2 is a block diagram ii of a wireless transmission performance testing system according to an embodiment of the present invention;
fig. 3 is a flow chart of a wireless transmission performance testing method according to an embodiment of the invention;
fig. 4 is a block diagram of a wireless transmission performance testing system according to an embodiment of the invention.
In the drawings, the wireless transmission efficiency test system 100, the wireless transmission efficiency test system 200, the wireless transmission efficiency test system 400, the wireless transmission efficiency test method 300, the wireless signal receiver 310 ~ 365, the step 110, the wireless signal receiver 120, the control device 220, the control device 420, the control device 440, the radio frequency signal transmission line 130, the attenuator 230, the attenuator 430, the attenuator 450, the jig 210, the directional antenna 410, the directional antenna C, the test cavity 240, the transmission line AP, the wireless access device, the DUT, the object to be tested D and the distance D are shown.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
"connected" or "coupled," as used herein, may refer to "electrically connected" or "electrically coupled. "connected" or "coupled" may mean that two or more elements or devices are in direct physical or indirect physical contact with each other, and may also mean that two or more elements or devices operate or act on each other.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms, i.e., meaning including, but not limited to.
Generally, when testing the wireless transmission performance of an electronic device, the electronic device is disposed in a test chamber, and as described in an embodiment of the present invention, a wireless transmission performance testing system is configured together for testing the wireless transmission performance of the electronic device to be tested, wherein the electronic device is, for example, a television, a tablet computer, or the like.
Referring to fig. 1, a block diagram of a wireless transmission performance testing system 100 according to the present invention is shown. The wireless transmission performance testing system 100 includes a wireless signal receiver 110, a control device 120, an attenuator 130, and a wireless Access Point (AP).
As shown in fig. 1, the control device 120 is disposed outside the test chamber C, and the other components including the DUT, the wireless signal receiver 110, the attenuator 130, and the wireless access device AP are disposed inside the test chamber C. The wireless signal receiver 110 is coupled to an electronic device under test (i.e., the DUT), and the wireless signal receiver 110 is also coupled to the attenuator 130. The attenuator 130 is coupled between the wireless signal receiver 110 and the wireless access point AP, which is coupled to the control device 120.
In the prior art, a wave-absorbing material such as foam or a protruding structure is arranged in a test cavity for testing the strength of a wireless signal. However, the wave-absorbing material cannot generally bear the temperature and humidity changes of the test chamber, and the wave-absorbing material is damaged, so that the test result is inaccurate. Therefore, the prior art chamber cannot perform wireless signal strength tests under various environmental conditions (e.g., high temperature or high humidity). In order to overcome the temperature and humidity variations inside the test chamber, in some embodiments of the present invention, the material inside the test chamber C is a material that can resist the temperature and humidity variations, such as a stainless steel metal material. In addition, in various embodiments of the present invention, the material inside the test chamber C is metal, which is suitable for the change of the environmental conditions such as the temperature and humidity inside the test chamber C, thereby providing different test environments for the DUT. Therefore, the conditions of the temperature, the humidity and the like of the DUT in different environments can be simulated by regulating and controlling the environmental conditions of the test cavity C.
The user can set the environmental conditions inside the test chamber C, including temperature, humidity, etc., through the user interface (not shown) of the test chamber C. On the other hand, the user can set the test conditions of the DUT, including turning on or off the bluetooth function, the WIFI function, and the like, through the control device 120, and transmit the set test condition instructions to the DUT through the wireless access point AP. In different embodiments, the user can also directly operate the user interface in the DUT to set the test condition of the DUT, which is not limited to the above.
Continuing with the above description, the DUT outputs a wireless test signal according to the aforementioned instruction or setting. The wireless signal receiver 110 receives the wireless test signal and transmits the test signal to the AP through the attenuator 130 by way of a wired connection (e.g., a radio frequency cable). The wireless access point AP may transmit the received test signal to the control device 120 in a wireless or wired manner. For example, the wireless access point AP may transmit the received test signal to the control device 120 through an ethernet cable or by wireless transmission. Finally, the control device 120 processes the received test signal and generates a test result, so as to obtain the wireless transmission performance of the DUT. In the present embodiment, the wireless access point AP is coupled to the control device 120 by a wired manner (e.g. an ethernet cable).
As shown in fig. 1, when the DUT outputs a test signal, many reflection and scattering phenomena occur due to the test signal passing through the test chamber C made of metal, which results in Multipath (multipaths) signals. In this way, the wireless signal receiver 110 receives not only the Line-of-Sight (LOS) signal directly transmitted by the DUT, but also a plurality of signals with different signal strengths and phases reflected from the interior of the test chamber C.
In order to test the wireless transmission performance of the DUT under specific and default environmental conditions such as temperature and humidity, in some embodiments, the test chamber C made of metal is selected to accommodate the DUT. In order to obtain appropriate test signals for further analysis processing to obtain correct test results, the present invention provides an embodiment as shown in fig. 2. As shown in fig. 2, the wireless transmission performance testing system 200 includes a directional antenna 210, an attenuator 230, a wireless access point AP and a control device 220. The directional antenna 210 is disposed in the testing chamber C, and the rest of the components including the attenuator 230, the wireless access point AP and the control device 220 are disposed outside the testing chamber C. The directional antenna 210 is coupled to the DUT and is coupled to the attenuator 230 through the transmission line 240. The attenuator 230 is coupled to the directional antenna 210 through a transmission line 240 and is coupled to the wireless access point AP. The wireless access point AP is coupled to the control device 220.
As shown in fig. 2, the DUT and the directional antenna 210 are disposed in the test chamber C. The DUT and the directional antenna 210 are disposed adjacent to each other. In some embodiments, directional antenna 210 has a single polarization direction, thereby receiving a single directional wireless signal. In some embodiments, the signal coupling direction of the directional antenna 210 is directed to the DUT for receiving the test signal generated by the DUT during the test process. That is, during the test process, the directional antenna 210 can receive the test signal of the straight path output by the DUT and avoid receiving the multi-path test signal generated inside the test chamber C. Therefore, by the arrangement between the directional antenna 210 and the DUT, the Signal-to-Noise ratio (S/N) of the test Signal received by the directional antenna 210 can be increased, thereby improving the accuracy of the subsequent test result. In some embodiments, only one side of the directional antenna 210 adjacent to the DUT is not covered with metal, and the remaining portion of the periphery is covered with metal. The directional antenna 210 covers a metal portion to isolate a wireless test signal. By disposing the DUT and the directional antenna 210 at adjacent positions, and not covering metal on the surface of the directional antenna 210 adjacent to the DUT, the directional antenna 210 can only receive the test signal of the straight path sent by the DUT, and isolate the multi-path test signal with different signal intensities or/and phases reflected multiple times inside the test cavity C.
Continuing with the above description, the directional antenna 210 is coupled to the attenuator 230 disposed outside the test cavity C through the transmission line 240. The attenuator 230 can adjust the strength of the test signal received by the directional antenna 210 to reduce the power of the test signal, so as to simulate the situation that the receiving end is far away from the DUT. In some embodiments, the attenuator 230 can sequentially reduce the power of the test signal according to the test conditions set by the control device 220. In various embodiments, the user can set the turn-down function of the attenuator 230 directly through the user interface of the attenuator 230. For example, after the test signal received by the directional antenna 210 is transmitted to the attenuator 230, the attenuator 230 adjusts the strength of the test signal to reduce the test conditions such as 10db, 20db …, so as to simulate the conditions of the receiving end being 5m, 10m …, etc. away from the DUT. The aforementioned receiving end actually refers to the position of the directional antenna 210, and it can be understood from simulation that the receiving end refers to the position of the user relative to the electronic device when the electronic device uses the wireless transmission function. The manner of reducing the test signal power by the attenuator 230 is only exemplary, and is not limited to the above. Various ways of reducing the power of the test signal by attenuator 230 are within the scope of the present invention.
In some embodiments, the control device 220 may be a computer or other devices with functions of storage, calculation, and processing. In some embodiments, the control device 220 can set the switch of the wireless transmission function in the DUT by executing the test program, such as turning on or off the bluetooth function, the WIFI function, and the like. In various embodiments, the control device 220 can also set the signal down-and-up amplitude of the attenuator 230 by executing a test procedure. In some embodiments, the control device 220 generates the test result by executing the test program to process (e.g., calculate and analyze) the test signal of the DUT after being tested.
Fig. 3 is a flowchart of a method 300 for testing wireless transmission performance according to an embodiment of the invention. For convenience and clarity of illustration, the following wireless transmission performance testing method 300 is described with reference to the wireless transmission performance testing system 200 shown in fig. 2 as an example, but not limited thereto.
As shown in fig. 2 and 3, in step 310, when the wireless transmission performance of the DUT is performed, the directional antenna 210 and the DUT are disposed in the test cavity C. In some embodiments, in step 310, the directional antenna 210 is disposed adjacent to the DUT, and the signal coupling direction of the directional antenna 210 is directed to the DUT.
Next, in step 315, the operation device 220, the attenuator 230 and the wireless access point AP are disposed outside the testing chamber C. In some embodiments, the steering device 220, the attenuator 230 and the wireless access point AP are arranged according to the connection relationship as shown in FIG. 2.
Then, in step 320, the control device 220 sets and executes the testing conditions (e.g., low temperature) of the DUT. In some embodiments, steps 320, 325, 330, 335, 340 are all performed under low temperature test conditions. In some embodiments, the low temperature test condition is that the temperature inside the test chamber C is lower than room temperature (e.g., 25 ℃). For example, the test conditions at the low temperature are set at 10 ℃ and 60% humidity. In some embodiments, the temperature and humidity inside the test chamber C can be set through the user interface of the test chamber C. At this time, the DUT is located in the testing chamber C and is in the aforementioned low-temperature environment condition, and the DUT performs one or more wireless transmission functions according to the testing condition set by the control device 220 to output the testing signal.
The test conditions may correspond to the test functions performed by the control device 220 during the execution of the test program, or to the settings of the corresponding components in the system 200. In some embodiments, the test functions performed during the execution of the test program include the wireless transmission function items to be tested by the DUT and the test timings thereof, the signal quality … of the simulated wireless transmission function corresponding to at least one receiving distance, and so on. In some embodiments, the aforementioned settings corresponding to the corresponding components in the system 200 include turning on/off the wireless transmission entity device in the DUT, setting the drop function device … of the attenuator 230, and so on. The above-mentioned manner of setting the test conditions and the content of the test conditions are only examples, and various manners of implementing the test conditions are within the scope of the present invention, and are not limited to the foregoing.
In some embodiments, after the DUT has been in the test chamber C for a period of time, when the environmental conditions inside the test chamber C are balanced, steps 325, 330, 335, 340 are performed, as described below.
Furthermore, in step 325, a test signal of the DUT is received through the directional antenna 210. As described above, the directional antenna 210 receives the test signal as a direct path signal, and thus has a good signal-to-noise ratio.
Next, in step 330, the test signal is transmitted to the attenuator 230 via the transmission line 240. Then, in step 335, the testing signal is adjusted by the attenuator 230, and the adjusted testing signal is transmitted to the control device 220. In some embodiments, the attenuator 230 adjusts the strength of the test signal by a strength (db) of at least one order corresponding to the simulated directional antenna 210 being at least a specified distance from the DUT. In addition, the attenuator 230 can transmit the adjusted test signal to the operation device 220 through the wireless access point AP, so as to reduce the physical transmission line structure between the operation device 220 and the attenuator 230, thereby facilitating the overall test operation. Next, in step 340, the test signal is processed by the control device 220 to generate a test result.
Further, in some embodiments, the attenuator 230 performs a plurality of different amplitude reductions to reduce the corresponding test signal strength, thereby simulating various distances between the DUT and the receiving end. For example, the attenuator 230 is adjusted up one step every 10db, and the strength of the test signal is sequentially decreased until 80db is adjusted down. After the attenuator 230 adjusts the test signal each time, the adjusted test signal is transmitted to the control device 220 and the step 340 is executed, the step 335 is repeated to adjust the strength of the next test signal, and the step 340 is executed again until all the test conditions in the low temperature environment condition are completed. That is, each time the attenuator 230 receives and adjusts a test signal, the control device 220 then processes the test signal and generates a test result. Based on the test conditions, steps 325, 330, 335, 340 are repeated to generate corresponding test results.
Similarly, in step 345, the control device 220 sets and executes the testing conditions (e.g., high temperature) of the DUT. In some embodiments, steps 345, 350, 355, 360, 365 are performed under high temperature test conditions. In some embodiments, the high temperature test condition means that the temperature inside the test chamber C is higher than the room temperature (e.g., 25 ℃). For example, the test conditions of high temperature are set temperature of 40 ℃ and humidity of 80%. In some embodiments, the temperature and humidity inside the test chamber C can be set through the user interface of the test chamber C. At this time, the DUT is located in the testing chamber C and is in the high temperature environment, and the DUT performs one or more wireless transmission functions according to the testing conditions set by the control device 220 to output the testing signals.
In some embodiments, after the DUT has been in the test chamber C for a period of time, when the environmental conditions inside the test chamber C are balanced, steps 350, 355, 360, 365 are performed. Wherein steps 350, 355, 360, 365 correspond to and are the same as steps 325, 330, 335, 340, respectively, and thus are not described herein again.
It should be noted that the low temperature environment condition set in step 320 and the high temperature environment condition set in step 345 are only a certain test condition of the DUT, and may be replaced by different temperature or humidity variation conditions. In some embodiments, the order of step 320 and step 345 may be reversed. In various embodiments, the method 300 further includes another set of steps 320, 325, 330, 335, 340 for a kit with the same environmental conditions, which may be used to test other test conditions different from the low temperature condition. In various embodiments, the number of sets can be adjusted in the method 300 according to the testing requirements of the DUT to be tested to achieve testing with a plurality of testing conditions, and is accomplished by a plurality of sequential steps in the method 300. For example, the number of the aforementioned kits in the method 300 can be increased or decreased, but not limited thereto.
In addition, as shown in fig. 4, the wireless transmission performance testing system 400 includes a directional antenna 410, an attenuator 430, a Radio Frequency (RF) transmission line 440, a wireless Access Point (AP), a fixture 450, and a control device 420. The directional antenna 410, the jig 450 and a portion of the rf signal transmission line 440 are disposed in the testing chamber C, and the rest of the components including the attenuator 430, a portion of the rf signal transmission line 440, the wireless access point AP and the control device 420 are disposed outside the testing chamber C. The directional antenna 410 is coupled to the DUT and the attenuator 430. In some embodiments, the directional antenna 410 is coupled to the attenuator 430 through a radio frequency signal transmission line 440 for transmitting the high frequency test signal. The attenuator 430 is coupled to the directional antenna 410 through the rf signal transmission line 440, and the attenuator 43 is coupled to the wireless access point AP. The wireless access point AP is coupled to the control device 420. Fig. 4 is similar to the embodiment shown in fig. 2, and the description of the same parts will not be repeated in the present invention, and only the differences between the embodiments shown in fig. 4 and fig. 2 will be emphasized.
As shown in fig. 4, the directional antenna 410 is a plate-coupled antenna and includes a coupling substrate 411. In some embodiments, the coupling substrate 411 has a planar structure, and the coupling substrate 411 has a connection hole (not shown). The connection hole is coupled to an end of the rf signal transmission line 440 and is coupled to the control device 420 through the rf signal transmission line 440. Thus, the coupling substrate 411 can receive the test signal generated by the DUT under test and transmit the test signal to the attenuator 430 through the RF signal transmission line 440.
In some embodiments, the coupling substrate 411 further has a metal cover (not shown) around it. The metal cover is disposed around the coupling substrate 411 and covers a portion of the space between the coupling substrate 411 and the DUT. The metal cover can shield the multi-path signal reflected by the inside of the test cavity C, so as to increase the signal-to-noise ratio of the test signal received by the coupling substrate 411, thereby improving the accuracy of the subsequent test result.
In some embodiments, the fixture 450 is configured to accommodate the directional antenna 410 and the DUT, and fix the directional antenna 410 at a position adjacent to the DUT, so as to conveniently mount the directional antenna 410 and the DUT, wherein the directional antenna 410 and the DUT are spaced apart by a specific distance D. In some embodiments, the distance D is 1-10 mm, so that the test signal received by the directional antenna 410 has a proper signal-to-noise ratio. In some embodiments, the distance D is less than 3mm under a specific high frequency signal test condition to obtain a proper signal-to-noise ratio, so as to generate an accurate test result through the operation device 420.
In summary, the wireless transmission performance testing system 200 and the method 300 can test different wireless transmission performance of the DUT under specific environmental conditions, such as higher or lower than room temperature. In the test process, the signal coupling direction of the directional antenna 210 points to the DUT, and the directional antenna 210 can receive the test signal with good signal-to-noise ratio, so that the control device 220 generates an accurate test result.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A wireless transmission efficiency test system is used for testing the wireless transmission efficiency of an object to be tested, the object to be tested is arranged in a test cavity, and the system is characterized in that: the wireless transmission performance test system comprises:
the directional antenna is arranged in the test cavity and is close to the object to be tested, and the signal coupling direction of the directional antenna points to the object to be tested and is used for receiving a test signal generated by the object to be tested through testing; and
a control device, coupled to the directional antenna, for receiving the test signal transmitted from the directional antenna, processing the test signal and generating a test result;
the material inside the test cavity is metal.
2. The test system of claim 1, wherein: further comprising:
an attenuator coupled between the directional antenna and the steering device.
3. The test system of claim 2, wherein: further comprising:
and the directional antenna is coupled with the attenuator through the radio frequency signal transmission line.
4. The test system of claim 1, wherein: the directional antenna is a panel coupling antenna, and comprises a coupling substrate coupled to the control device through a transmission line.
5. The test system as claimed in claim 1, wherein the directional antenna is spaced apart from the test object by a distance of 1 ~ 10 mm.
6. The test system of claim 1, wherein: further comprising:
an attenuator for adjusting the test signal transmitted from the directional antenna and transmitting the adjusted test signal to the control device; and
and the radio frequency signal transmission line is used for transmitting the test signal output by the directional antenna to the attenuator.
7. The test system of claim 1, wherein: further comprising:
and the jig is arranged in the test cavity and used for fixing the directional antenna at a position adjacent to the object to be tested.
8. The test system of claim 1, wherein: and setting an environmental condition inside the test cavity through a user interface of the test cavity, so that the object to be tested can test the wireless transmission efficiency under the environmental condition.
9. A wireless transmission efficiency test method is used for testing the wireless transmission efficiency of an object to be tested, and is characterized in that: the method comprises the following steps:
arranging a directional antenna and the object to be tested in a test cavity, wherein the signal coupling direction of the directional antenna points to the object to be tested;
arranging a control device coupled to the directional antenna;
receiving a test signal of the object to be tested through the directional antenna; and
and receiving the test signal transmitted by the directional antenna through the control device, processing the test signal through the control device and generating a test result.
10. The test method of claim 9, wherein: further comprising:
transmitting the test signal output from the directional antenna to an attenuator through a radio frequency signal transmission line; and
and adjusting the test signal transmitted from the directional antenna through the attenuator, and transmitting the adjusted test signal to the control device.
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| CN111610400A (en) * | 2020-06-02 | 2020-09-01 | 苏州乐轩科技有限公司 | Detection system and detection method |
| CN112316992A (en) * | 2020-10-13 | 2021-02-05 | 南京英飞达自动化设备有限公司 | High-low temperature rapid alternating damp-heat test box and test method thereof |
| CN113595656A (en) * | 2021-06-15 | 2021-11-02 | 福霸汽车天线（苏州）有限公司 | Test method of intelligent antenna |
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