CN210927638U - Wireless terminal signal testing device - Google Patents
Wireless terminal signal testing device Download PDFInfo
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- CN210927638U CN210927638U CN201922266148.0U CN201922266148U CN210927638U CN 210927638 U CN210927638 U CN 210927638U CN 201922266148 U CN201922266148 U CN 201922266148U CN 210927638 U CN210927638 U CN 210927638U
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Abstract
The utility model discloses a wireless terminal signal testing arrangement, wherein, observe and control host computer and two at least analysis test equipment, signal line control module and test signal transceiver module electricity are connected, signal line control module electricity is connected between two at least analysis test equipment's signal test port and test signal transceiver module, observe and control the corresponding analysis test equipment executive signal test item that host computer control is used for the executive signal test item, and the signal line among control signal line control module and the test signal transceiver module is connected, make the analysis test equipment of executive signal test item and arrange in the microwave darkroom by establishing test signal's between the wireless terminal that is surveyed be connected. The utility model discloses utilize signal line control module and test signal transceiver module to establish from the analysis test equipment of many standards and non-standard to the signal link between the wireless terminal of being surveyed in the microwave dark room, realized the signal test of the wireless terminal product of multiple standards and non-standard.
Description
Technical Field
The utility model relates to a terminal test technical field, in particular to wireless terminal's signal testing arrangement.
Background
The technology of the internet of things is developed on the basis of the traditional technology, and the technology of the internet of things is widely applied in various industries nowadays, but in the technical field of testing of the internet of things, a large number of special test standards and test systems are lacked, especially in the field of testing of wireless terminals of industrial internet of things, most of the technologies refer to the traditional electronic product test method, for example, for the radiation performance test of a wireless sensor, a conduction mode test is adopted at present, including a transmission power test in the SRRC (State Radio regulatory commission) certification.
At present, the radiation performance of the Mobile phone is tested by an OTA (Over the Air) test signal test System, but the OTA test System for testing the Mobile phone is regulated according to CTIA (American society for Wireless communication and Internet) standard, the size of a darkroom is minimum at × 4 meters, × 4 meters and more, the size of a darkroom for OTA certification test of the Mobile phone is conventionally more than 5 meters, × 5 meters, × 5 meters, and the OTA comprehensive tester for testing the Mobile phone is based on GSM (Global System for Mobile Communications), TD-SCDMA (Time Division-synchronization Code Division Multiple Access), TD-LTE (Evolution Long term Evolution).
The wireless terminal products are the most important devices in the products of the internet of things, and with the development of electronic technology, a plurality of wireless products adopt the built-in antenna technology, so that the traditional conduction test method is not applicable when the wireless performance of the products is tested. If the test is performed by wire-through, there will be a difference between the end use product and the sample tested and the test sample will not truly reflect the properties of the end product. For example, after a water meter based on NB-IoT (Narrow Band Internet of Things) is tested in a laboratory in a conduction mode, the radiation power and the receiving sensitivity meet the design requirements, but after the water meter is arranged on a water pipe in a building, the spatial radiation performance index of the water meter changes obviously, and signals cannot be transmitted normally. It can be seen that the conventional test method is no longer suitable for signal testing of the novel wireless terminal product.
Currently, with the development of the internet of things technology, wireless terminal products based on non-standard technologies are more and more, and as described above, the conventional testing method cannot simultaneously meet the testing requirements of wireless terminal products based on multiple standard technologies and non-standard technologies. Therefore, how to implement signal testing of various standard and non-standard wireless terminal products becomes an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a wireless terminal signal testing device to realize signal testing of multiple standard and non-standard wireless terminal products.
The technical scheme of the utility model is realized like this:
a wireless terminal signal testing device, comprising:
the system comprises a measurement and control host, analysis and test equipment, a signal line control module, a test signal transceiving module and a microwave darkroom; wherein the content of the first and second substances,
the analysis test equipment is at least two and is respectively used for executing different signal test items;
a tested wireless terminal for executing signal testing is placed in the microwave darkroom;
the test signal transceiver module is in test signal communication with the wireless terminal to be tested;
the measurement and control host is electrically connected with the analysis test equipment, the signal line control module and the test signal transceiving module, and the signal line control module is electrically connected between a signal test port of the analysis test equipment and the test signal transceiving module;
the measurement and control host machine controls analysis test equipment used for executing the signal test items to execute the signal test items according to the signal test items, and controls the signal line control module to be connected with the signal lines in the test signal receiving and sending module, so that the analysis test equipment executing the signal test items is connected with the tested wireless terminal through the test signals.
Further, the signal line control module includes:
a first signal line control circuit and a second signal line control circuit; wherein the content of the first and second substances,
the first signal line connecting circuit is provided with a first control end, a first front-stage connecting end and a first rear-stage connecting end, the first control end is electrically connected to the measurement and control host, at least two pairs of the first front-stage connecting ends are respectively and correspondingly electrically connected to signal testing ports of at least two pieces of analysis and test equipment, two first rear-stage connecting ends are provided, and the first signal line connecting circuit is controlled by the measurement and control host to be connected with a signal line between any pair of the first front-stage connecting ends and the first rear-stage connecting ends;
the second signal line control circuit is provided with a second control end, two first front-stage connecting ends and two second rear-stage connecting ends, the second control end is electrically connected to the measurement and control host, the two second front-stage connecting ends are electrically connected to the two first rear-stage connecting ends respectively, the two second rear-stage connecting ends are electrically connected to the test signal transceiving module, and the second signal line control circuit is controlled by the measurement and control host to connect a signal line between any one of the second front-stage connecting ends and any one of the second rear-stage connecting ends and connect a signal line between the other one of the second front-stage connecting ends and the other one of the second rear-stage connecting ends.
Furthermore, the signal line control module also comprises a signal amplifying circuit;
the first signal line connecting circuit is also provided with a third rear-stage connecting end, the front-stage connecting end of the signal amplifying circuit is electrically connected with the third rear-stage connecting end, and the rear-stage connecting end of the signal amplifying circuit is electrically connected with the second front-stage connecting end;
the first signal line connecting circuit is controlled by the measurement and control host to connect a signal line between any pair of the first front-stage connecting ends and the third rear-stage connecting end, and the signal amplifying circuit amplifies the passing signals.
Further, the test signal transceiving module includes:
the antenna signal selection circuit, the dual-polarized antenna and the signal connection module of the tested terminal; wherein the content of the first and second substances,
the dual-polarized antennas are arranged in the microwave darkroom and are circumferentially arranged and uniformly surround the tested wireless terminal, and the tested wireless terminal is positioned in the center of the circumference formed by the dual-polarized antennas and is used for executing signal receiving and transmitting of the signal test of the tested wireless terminal;
the antenna signal selection circuit is provided with a fourth signal control end, a fourth front-stage connecting end and a fourth rear-stage connecting end, the fourth signal control end is electrically connected to the measurement and control host, the fourth front-stage connecting end is electrically connected to one of the second rear-stage connecting ends, the fourth rear-stage connecting end is electrically connected to the dual-polarized antenna, and the antenna signal selection circuit establishes a signal circuit between any one dual-polarized antenna and the second signal circuit control circuit under the control of the measurement and control host;
the tested terminal signal connection module is electrically connected to the other one of the second rear-stage connection terminals and is in communication with the tested wireless terminal.
Further, the tested terminal signal connection module comprises:
a third signal line control circuit, a wired interface and a communication antenna; wherein the content of the first and second substances,
the third signal line control circuit is provided with a fifth control end, a fifth front-stage connecting end and a fifth rear-stage connecting end, the fifth control end is electrically connected to the measurement and control host, the fifth front-stage connecting end is electrically connected to the other connecting end of the second rear-stage connecting end, the number of the fifth rear-stage connecting ends is two, and the third signal line control circuit is controlled by the measurement and control host to be connected with a signal line between any one of the fifth front-stage connecting end and the fifth rear-stage connecting end;
the wired interface is positioned in the microwave darkroom, is electrically connected to one of the fifth rear-stage connecting ends, and is used for establishing wired communication connection with the wireless terminal to be tested;
the communication antenna is positioned in the microwave darkroom, is electrically connected to the other connecting end of the fifth rear-stage connecting ends, and is used for establishing wireless communication connection with the wireless terminal to be tested.
Further, the analytical test device includes:
at least two of the comprehensive tester, the signal control analyzer and the network analyzer.
Further, the wireless terminal signal testing device further comprises:
the rotary table is arranged in the microwave darkroom and used for placing the wireless terminal to be tested, and a rotating shaft of the rotary table is vertical to a plane formed by the dual-polarized antennas;
and the driving component is electrically connected with the measurement and control host machine so as to drive the rotation of the rotary table under the control of the measurement and control host machine.
Further, the wireless terminal signal testing device further comprises:
and the laser positioner is arranged in the microwave darkroom and used for transmitting laser to the placing position of the tested wireless terminal so as to present a laser spot at the placing position of the tested wireless terminal.
Further, the wireless terminal signal testing device further comprises:
the camera is arranged in the microwave darkroom to shoot video information in the microwave darkroom;
the video monitoring host is electrically connected to the camera to display video information shot by the camera; and
and the light supplement lamp is arranged in the microwave darkroom, so that the light supplement is lightened when the camera shoots.
Further, the wireless terminal signal testing device further comprises:
the ventilation waveguide window is arranged on the box body of the microwave darkroom, and the box body of the microwave darkroom is provided with an opening for installing the ventilation waveguide window.
It can be seen from the above solution that the wireless terminal signal testing device of the present invention utilizes the signal line control module and the test signal transceiver module to establish the signal link from the multiple analysis testing devices to the tested wireless terminal in the microwave darkroom, and utilizes the auxiliary of the measurement and control host to perform the signal link connection between the different analysis testing devices and the tested wireless terminal in different signal testing project time, thereby realizing the combination of the integrated tester for executing the standard protocol test, the signal control analyzer for executing the non-standard protocol test, and the network analyzer for executing the calibration link loss and measuring the passive antenna performance, realizing the signal test of the wireless terminal products with multiple standards and non-standards, and compared with the existing signal testing device which can only execute a single wireless terminal product, the wireless terminal signal testing device of the present invention has stronger compatibility, and the degree of automation is higher.
Drawings
Fig. 1 is a schematic structural diagram of a wireless terminal signal testing device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a signal line control module in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another embodiment of a signal line control module in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a test signal transceiver module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a signal connection module of a terminal under test in an embodiment of the present invention;
fig. 6 is a schematic diagram of a specific application of the wireless terminal signal testing apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model discloses a wireless terminal signal testing arrangement mainly includes observing and controling host computer 1, analysis test equipment 2, signal line control module 3, test signal transceiver module 4 and microwave anechoic chamber 5. The number of the analysis test devices 2 is at least two, and the analysis test devices are respectively used for executing different signal test items. The wireless terminal to be tested for performing the signal test is placed in the microwave darkroom 5. The test signal transceiver module 3 communicates with the wireless terminal to be tested. The measurement and control host 1 is electrically connected with the analysis test equipment 2, the signal line control module 3 and the test signal transceiving module 4, and the signal line control module 3 is electrically connected between the signal test port of the analysis test equipment and the test signal transceiving module 4. Different analytical test devices 2 are used to perform different signal test items. The measurement and control host 1 controls the analysis test equipment 2 for executing the signal test items to execute corresponding signal test items according to different signal test items, and controls the signal line control module 3 to be connected with the signal line in the test signal transceiving module 4, so that the connection of test signals is established between the analysis test equipment 2 for executing the signal test items and the tested wireless terminal, and the analysis test equipment 2 for executing the signal test items is utilized to complete the signal test of the tested wireless terminal.
In an alternative embodiment, the measurement and control host 1 may be implemented by a computer, and a relevant program for controlling the analysis test device 2, the signal line control module 3, and the test signal transceiver module 4 to perform signal testing is run in the computer. The computer model number composition structure and the running program thereof can be implemented by the prior art, and are not described in detail herein.
In alternative embodiments, the analytical test device 2 may comprise a comprehensive tester, a signal control analyzer, a network analyzer, or the like. The comprehensive tester is used for measuring the transmitting power, receiving sensitivity and the like of a tested wireless terminal in a standard system, such as the existing Wi-Fi standard, BT (Bluetooth) standard, NB-IoT standard, 2G standard, 3G standard, 4G standard, 5G standard and the like. The integrated tester can be realized by adopting the prior art, and the details are not repeated here. The signal control analyzer is used for measuring the transmitting power, receiving sensitivity and the like of a tested wireless terminal in a non-standard mode, such as a private communication protocol, and the non-standard mode refers to various other communication protocols except a standard protocol. The signal control analyzer can be realized by adopting the prior art, and the detailed description is omitted here. The network analyzer is used for calibrating the link loss of the wireless terminal to be tested and measuring the performance of the passive antenna as the wireless terminal to be tested. The network analyzer can be implemented by using the prior art, and the details are not repeated herein.
As shown in fig. 2, in the embodiment of the present invention, the signal line control module 3 includes a first signal line control circuit 31 and a second signal line control circuit 32.
The first signal line connection circuit 31 has a first control end, a first front-stage connection end and a first rear-stage connection end, the first control end is electrically connected to the measurement and control host 1, at least two pairs of the first front-stage connection ends are respectively and correspondingly electrically connected to the signal test ports of at least two pieces of analysis and test equipment 2, two first rear-stage connection ends are provided, and the first signal line connection circuit 31 is controlled by the measurement and control host 1 to connect a signal line between any pair of the first front-stage connection end and the first rear-stage connection end. For example, as shown in fig. 2, the first signal line connection circuit 31 may connect a signal line between an upper pair of first front-stage connection terminals and a first rear-stage connection terminal under the control of the measurement and control host 1, may connect a signal line between a lower pair of first front-stage connection terminals and a first rear-stage connection terminal under the control of the measurement and control host 1, or may connect a signal line between any pair of first front-stage connection terminals and a first rear-stage connection terminal between the upper and lower first front-stage connection terminals under the control of the measurement and control host 1.
The second signal line control circuit 32 has a second control end, two first front connection ends and two second rear connection ends, wherein the second control end is electrically connected to the measurement and control host 1, the two second front connection ends are electrically connected to the two first rear connection ends of the first signal line 31, the two second rear connection ends are electrically connected to the test signal transceiver module 4, and the second signal line control circuit 32 switches on a signal line between any one of the second front connection ends and any one of the second rear connection ends and switches on a signal line between the other one of the second front connection ends and the other one of the second rear connection ends under the control of the measurement and control host 1. For example, as shown in fig. 2, the second signal line control circuit 32 may connect a signal line between an upper connection terminal of the second former-stage connection terminals and an upper connection terminal of the second latter-stage connection terminals, and connect a signal line between a lower connection terminal of the second former-stage connection terminals and a lower connection terminal of the second latter-stage connection terminals, under the control of the measurement and control host 1; the second signal line control circuit 32 may also connect a signal line between an upper connection end of the second front-stage connection ends and a lower connection end of the second rear-stage connection ends and connect a signal line between a lower connection end of the second front-stage connection ends and an upper connection end of the second rear-stage connection ends under the control of the measurement and control host 1.
Regarding the concrete realization of first signal line control circuit 31 and second signal line control circuit 32, can the utility model discloses a spirit principle basis combines various commonly used electronic components, integrated circuit to realize, and no longer the repeated description here.
In another embodiment, as shown in fig. 3, the signal line control module 3 further includes a signal amplifying circuit 33. The first signal line connection circuit 31 further has a third rear connection terminal, the front connection terminal of the signal amplification circuit 33 is electrically connected to the third rear connection terminal, and the rear connection terminal of the signal amplification circuit 33 is electrically connected to the second front connection terminal of the second signal line control circuit 32. The first signal line connection circuit 31 connects a signal line between any pair of the first front-stage connection end and the third rear-stage connection end of the measurement and control host 1 under the control of the measurement and control host. For example, as shown in fig. 2, the first signal line connection circuit 31 may connect a signal line between an upper pair of first front-stage connection terminals and a third rear-stage connection terminal under the control of the measurement and control host 1, may connect a signal line between a lower pair of first front-stage connection terminals and a third rear-stage connection terminal under the control of the measurement and control host 1, or may connect a signal line between any pair of first front-stage connection terminals and a third rear-stage connection terminal between the upper and lower first front-stage connection terminals under the control of the measurement and control host 1. On the basis of the previous embodiment combined with the signal line control module 3, for any pair of first front-stage connection terminals, the first signal line connection circuit 31 connects a signal line between the any pair of first front-stage connection terminals and the first rear-stage connection terminal, or connects a signal line between the any pair of first front-stage connection terminals and the third rear-stage connection terminal, under the control of the measurement and control host 1.
The signal amplifier circuit 33 amplifies the signal passing therethrough, and the amplifier circuit 33 may amplify the signal from the first signal line connection circuit 31 to the second signal line control circuit 32 or may amplify the signal from the second signal line connection circuit 32 to the first signal line control circuit 31. The specific implementation of the amplifying circuit 33 can be realized by combining various common electronic components and integrated circuits on the basis of the spirit of the present invention, which is not described herein again.
In an optional embodiment, the first signal line connection circuit 31 connects a signal output port in a signal test port of any one of the analysis test devices 2 to the amplification circuit 33, and connects a signal input port in the signal test port of any one of the analysis test devices 2 to the second signal line control circuit 32 under the control of the measurement and control host 1; in an optional embodiment, the first signal line connection circuit 31 connects a signal output port in a signal test port of any one piece of analysis and test equipment 2 to the second signal line control circuit 32 under the control of the measurement and control host 1, and connects a signal input port in the signal test port of any one piece of analysis and test equipment 2 to the amplification circuit 33; in an optional embodiment, the first signal line connection circuit 31 connects a signal output port and a signal input port in a signal test port of any one of the analysis test devices 2 to the second signal line control circuit 32 under the control of the measurement and control host 1; in an optional embodiment, the first signal line connection circuit 31 connects a signal output port and a signal input port of a signal test port of any one of the analysis test devices 2 to the amplifying circuit 33 under the control of the measurement and control host 1. The measurement and control host 1 controls the first signal line connection circuit 31 to realize the connection in various combination forms according to different signal test items.
As shown in fig. 4, in the embodiment of the present invention, the test signal transceiver module 4 mainly includes an antenna signal selection circuit 41, a dual-polarized antenna 42 and a terminal signal connection module 43 to be tested. The plurality of dual-polarized antennas 42 are installed in the microwave darkroom 5 and are circumferentially arranged and uniformly surround the tested wireless terminal, the tested wireless terminal is located in the center of the circumference formed by the dual-polarized antennas, and the tested wireless terminal is used for receiving and transmitting signals for executing the signal test of the tested wireless terminal.
The antenna signal selection circuit 41 has a fourth signal control end, a fourth preceding-stage connection end and a fourth subsequent-stage connection end, the fourth signal control end is electrically connected to the measurement and control host 1, the fourth preceding-stage connection end is electrically connected to one of the second subsequent-stage connection ends of the second signal line control circuit 32, the fourth subsequent-stage connection end is electrically connected to the dual-polarized antenna 42, and the antenna signal selection circuit 41 establishes a signal line between any one of the dual-polarized antenna 42 and the second signal line control circuit 32 under the control of the measurement and control host 1.
The tested terminal signal connection module 43 is electrically connected to the other of the second back-stage connection terminals of the second signal line control circuit 32, and communicates with the tested wireless terminal.
Wherein, the concrete realization of antenna signal selection circuit 41 can be in the utility model discloses a realize combining various commonly used electronic components, integrated circuit on the principle basis of spirit, no longer the repeated description here. Dual-polarized antenna 42 may also be implemented using conventional techniques and will not be described in detail herein. In an alternative embodiment, an existing high-speed switch box may be employed as the antenna signal selection circuit 41.
As shown in fig. 5, in the embodiment of the present invention, the terminal signal connection module 43 includes a third signal line control circuit 431, a wired interface 432 and a communication antenna 433. The third signal line control circuit 431 has a fifth control end, a fifth preceding connection end and a fifth subsequent connection end, the fifth control end is electrically connected to the measurement and control host 431, the fifth preceding connection end is electrically connected to another connection end of the second subsequent connection ends of the second signal line control circuit 32, the number of the fifth subsequent connection ends is two, and the third signal line control circuit 431 is controlled by the measurement and control host 1 to connect a signal line between any one of the fifth preceding connection end and the fifth subsequent connection end. The wired interface 432 is located in the anechoic chamber 5 and is electrically connected to one of the fifth back-stage connection terminals of the third signal line control circuit 431, and is used for establishing wired communication connection with the wireless terminal to be tested. The communication antenna 433 is located in the anechoic chamber 5 and is electrically connected to the other of the fifth rear-stage connection ends of the third signal line control circuit 431, and is used for establishing wireless communication connection with the wireless terminal to be tested.
Regarding the specific implementation of the third signal line control circuit 431, the present invention can be implemented by combining various common electronic components and integrated circuits on the basis of the spirit principle, and the details are not repeated here. Meanwhile, an existing switching box may be employed as the third signal line control circuit 431.
The function of the tested terminal signal connection module 43 is to implement wired connection or wireless connection with the tested wireless terminal, for example, if the tested wireless terminal is a mobile phone or the like having a wired communication interface (e.g., USB, Type-C, Lighting interface, etc.), the wired communication interface of the tested wireless terminal may be connected to the wired interface 432, and the testing and controlling host 1 controls the third signal line control circuit 431 to connect the wired interface 432 to the testing signal transceiver module 4, so that the analyzing and testing device 2 can send an instruction to the tested wireless terminal through the wired interface 432; if the wireless terminal to be tested does not have a wired communication interface, the measurement and control host 1 can control the third signal line control circuit 431 to connect the communication antenna 433 with the test signal transceiving module 4, so that the analysis and test device 2 can send instructions to the wireless terminal to be tested in a wireless manner through the communication antenna 433.
In an alternative embodiment, the analytical test device 2 comprises at least two of a combination tester, a signal control analyzer and a network analyzer.
Except that above-mentioned each component part, the utility model discloses wireless terminal signal testing arrangement still can further include auxiliary assembly such as revolving stage, drive group build, laser locator. Fig. 6 is a schematic diagram illustrating a configuration of a specific application of the wireless terminal signal testing apparatus according to an embodiment of the present invention. Referring to fig. 6, the analytical test device 2 includes a combination tester, a signal control analyzer, and a network analyzer. The comprehensive tester is used for measuring the transmitting power, receiving sensitivity and the like of a tested wireless terminal in a standard mode; the signal control analyzer is used for measuring the transmitting power, receiving sensitivity and the like of the measured wireless terminal in a non-standard mode; the network analyzer is used for calibrating the link loss of the wireless terminal to be tested and measuring the performance of the passive antenna as the wireless terminal to be tested.
The preceding stage connection end of the first signal line connection circuit 31 is electrically connected to the signal test ports of the integrated tester, the signal control analyzer and the network analyzer, the signal test ports of the integrated tester, the signal control analyzer and the network analyzer are divided into two paths of ports, namely an output port and an input port, corresponding to the output port and the input port of the integrated tester, the first signal line connection circuit 31 has two paths (or called a pair of) of preceding stage connection ends correspondingly connected, corresponding to the output port and the input port of the signal control analyzer, the first signal line connection circuit 31 has two paths of preceding stage connection ends correspondingly connected, corresponding to the output port and the input port of the network analyzer, and the first signal line connection circuit 31 has two paths of preceding stage connection ends correspondingly connected.
The two pairs of the rear-stage connection terminals of the first signal line connection circuit 31 are electrically connected to the second signal line control circuit 32 and the signal amplification circuit 33, respectively. Corresponding to the two signal testing ports of the integrated tester, the signal control analyzer and the network analyzer, the rear-stage connection end of the first signal line connection circuit 31, which is electrically connected to the second signal line control circuit 32, and the rear-stage connection end, which is electrically connected to the signal amplification circuit 33, are also two.
The control end of the first signal line connecting circuit 31 is electrically connected to the measurement and control host 1. Under the control of the measurement and control host 1, the first signal line connection circuit 31 may connect a signal circuit between the integrated tester and the second signal line control circuit 32, or connect a signal circuit between the signal control analyzer and the second signal line control circuit 32, or connect a signal circuit between the network analyzer and the second signal line control circuit 32, or connect a signal circuit between the integrated tester and the signal amplification circuit 33, or connect a signal circuit between the signal control analyzer and the signal amplification circuit 33, or connect a signal circuit between the network analyzer and the signal amplification circuit 33. Optionally, taking a network analyzer as an example, the integrated tester and the signal control analyzer may also adopt the same connection mode, and under the control of the measurement and control host 1, the first signal line connection circuit 31 may connect a signal circuit between an output port in the network analyzer and the second signal line control circuit 32 and connect a signal circuit between an input port in the network analyzer and the signal amplification circuit 33, or the first signal line connection circuit 31 may connect a signal circuit between an output port in the network analyzer and the amplification circuit 33 and connect a signal circuit between an input port in the network analyzer and the second signal line control circuit 32.
The amplifying circuit 33 is used for amplifying the passed signals, for example, the wireless terminal to be tested is a passive device, and the signals sent by the wireless terminal to be tested are weak, so that the acquired signals can be amplified by the amplifying circuit 33 and then sent back to the corresponding analysis and test device 2 for testing through the first signal line connecting circuit 31. For example, for some tests that may be required, the signal sent by the analysis test device 2 for test needs to be sent to the wireless terminal under test through the signal circuit of the subsequent stage via the amplifying circuit 33.
As can be seen from fig. 6, the preceding connection terminal of the second signal line control circuit 32 is electrically connected to the subsequent connection terminal of the amplification circuit 33 and the first signal line connection circuit 31 at the same time, one of the subsequent connection terminals of the second signal line control circuit 32 is electrically connected to the antenna signal selection circuit 41, and the other of the subsequent connection terminals of the second signal line control circuit 32 is electrically connected to the third signal line control circuit 431. Further, the antenna signal selection circuit 41 is electrically connected to the dual polarized antenna 42 in the microwave anechoic chamber 5, and the third signal line control circuit 431 communicates with the wireless terminal under test through the wired interface 432 and the communication antenna 433 at the rear connection end thereof. In this connection structure, when a certain analysis and test device 2 is used to perform a relevant test on a wireless terminal to be tested, a corresponding connection relationship can be established, for example, if a comprehensive tester is used to perform a test on a wireless terminal to be tested, if a relevant test on a transmission signal of the wireless terminal to be tested is to be performed, the control of the measurement and control host 1 is performed, on one hand: establishing an output port (outputting a control signal to a tested wireless terminal) of the comprehensive tester, and connecting the output port to the second signal line control circuit 32 through the first signal line connection circuit 31 (or connecting the output port to the second signal line control circuit 32 through the first signal line connection circuit 31 and the signal amplification circuit 33), and further connecting the output port to the tested wireless terminal through the third signal line control circuit 431 and the rear-stage wired interface 432 or the communication antenna 433 from the second signal line control circuit 32, so that the instruction control of the comprehensive tester on the tested wireless terminal is realized; on the other hand, the antenna signal selection circuit 41 is set up to be connected to the first signal line connection circuit 31 through the second signal line control circuit 32 (or to be connected to the first signal line connection circuit 31 through the second signal line control circuit 32 via the signal amplification circuit 33), and then the first signal line connection circuit 31 is connected to the input port of the integrated tester, so that the integrated tester collects the transmission signal of the wireless terminal to be tested.
With continued reference to fig. 6, the embodiment of the wireless terminal signal testing device further includes a turntable 61 and a driving assembly 62. The rotary table 61 is installed in the anechoic chamber 5 and used for placing the wireless terminal to be tested, and the rotating shaft of the rotary table 61 is perpendicular to the plane formed by the plurality of dual-polarized antennas 42. The driving assembly 62 is electrically connected to the measurement and control host 1 to drive the rotation of the turntable 61 under the control of the measurement and control host 1. The driving assembly 62 may be formed by a driving motor, a motor controller, a connecting assembly (such as a gear) between the driving motor and the turntable 61, and the like, and may be implemented by using the prior art, and will not be described herein again.
When the signal test of the wireless terminal is carried out, because the rotating shaft of the rotary table 61 is vertical to the plane formed by the plurality of dual-polarized antennas 42, and then in the process that the tested wireless terminal is placed on the rotary table 61 and rotates along with the rotary table 61, the plurality of dual-polarized antennas 42 can collect wireless signals in the all-around spherical distribution space of the tested wireless terminal, and the most comprehensive test data can be provided for the analysis test equipment 2 participating in the test.
With continued reference to fig. 6, in an alternative embodiment, the wireless terminal signal testing apparatus further includes a laser locator 7, where the laser locator 7 is installed in the microwave dark room 5, and is used for emitting laser to the placement position of the wireless terminal to be tested so as to present a laser spot at the placement position of the wireless terminal to be tested. Therefore, the placement of the tested wireless terminal can be assisted, the placement position of the tested wireless terminal is more accurate, and the accuracy of a test result is ensured.
With continued reference to fig. 6, in an alternative embodiment, the wireless terminal signal testing apparatus further includes a camera 81, a video monitoring host 82 and a fill-in light 83, where the camera 81 is installed in the darkroom 5 to capture video information in the darkroom 5. The video monitoring host 82 is electrically connected to the camera 81 to display video information captured by the camera 81. The fill light 83 is installed in the darkroom 5 to illuminate when the camera 81 is used for photographing. The camera 81 and the video monitoring host 82 can be used for monitoring the condition in the anechoic chamber 5 in real time, so as to ensure that no abnormality occurs in the anechoic chamber 5 during testing, such as position change or scratch of the tested wireless terminal during testing. Often be in the dark state when testing in the microwave darkroom 5, the clear of monitoring video can be ensured to light filling lamp 83.
In addition, in an alternative embodiment, the wireless terminal signal testing apparatus further includes a ventilation waveguide window (not shown in the figure), the ventilation waveguide window is installed in the box body of the microwave chamber 5, and the box body of the microwave chamber 5 is provided with an opening for installing the ventilation waveguide window. In the process of testing the wireless terminal signal, the temperature in the anechoic chamber 5 rises due to the progress of the test work, and the temperature rise can influence the accuracy of the test result, after the ventilation waveguide window is added, on one hand, the inside and outside air circulation of the anechoic chamber 5 is realized, the stability of the temperature in the anechoic chamber 5 is ensured, and on the other hand, the inaccuracy of the test result caused by the signal not overflowing out of the anechoic chamber 5 and the reflection in the anechoic chamber 5 during the test can also be prevented.
In an alternative embodiment, the anechoic chamber 5 comprises a shielding shell and a wave-absorbing sponge, and the wave-absorbing sponge is laid in the shielding shell to prevent the signal from being reflected in the anechoic chamber 5.
In an optional embodiment, the number of the dual-polarized antennas 42 is 23, the dual-polarized antennas are arranged at equal intervals, and during the test, the measurement and control host 1 directly controls the antenna signal selection circuit 41 to select and connect 23 dual-polarized antennas 42 and a path in the polarization direction of each dual-polarized antenna 42.
During testing, the wireless terminal to be tested is placed on the rotary table 61, and the measurement and control host 1 controls the rotary table 61 to rotate by a corresponding angle through the driving assembly 62. Signals of the 23 dual-polarized antennas 42 are sent to a comprehensive tester (for a tested wireless terminal in a standard system) or a signal control analyzer (for a tested wireless terminal in a non-standard system) through the antenna signal selection circuit 41, the second signal line control circuit 32, the signal amplification circuit 33 (optionally) and the first signal line connection circuit 31, so that the relevant tests of the transmitting power and the receiving sensitivity of the tested wireless terminal are realized.
By adopting the wireless terminal signal testing device provided by the embodiment of the utility model, when the network analyzer is used for calibrating the link loss, under the control of the measurement and control host 1, the port of the network analyzer for transmitting signals outwards is connected with the dipole antenna for calibration at the center position of the turntable (the communication antenna is replaced by the dipole antenna at this time), and the port of the network analyzer for receiving signals is connected with the dual-polarized antenna 42; when the network analyzer is used for measuring the performance of the passive antenna, under the control of the measurement and control host 1, a port of the network analyzer for transmitting signals outwards is connected with the communication antenna 433, and then the communication between the port of the network analyzer for transmitting signals outwards and the measured passive antenna placed on the rotary table is realized through the communication antenna 433, a port of the network analyzer for receiving signals is connected with the antenna signal selection circuit 41, and further, the collection of signals transmitted by the passive antenna from the dual-polarized antenna 42 is realized under the control of the measurement and control host 1 on the antenna signal selection circuit 41. When the link loss calibration is performed, the communication antenna 433 needs to be replaced with a dipole antenna for calibration, and when other signal test items except for the link loss calibration are performed, the dipole antenna is not used, and a general antenna for communicating with the wireless terminal under test is used for the communication antenna 433.
In an alternative embodiment, the measurement and control host 1 is connected to the analysis and test device 2, the first signal line connection circuit 31, the second signal line control circuit 32, the antenna signal selection circuit 41, the third signal line control circuit 431, the motor controller, and the like through a GPIB (General-Purpose Interface Bus) Interface, so as to control these components by the measurement and control host 1.
In an optional embodiment, the driving motor may be connected to the motor controller through an optical fiber, and the motor controller is connected to the measurement and control host 1 through a GPIB-to-USB cable, so as to control the rotation of the turntable 61 by the measurement and control host.
In an optional embodiment, when the control signal of the antenna signal selection circuit 41 is an optical signal, the antenna signal selection circuit 41 may be connected to the photoelectric conversion box through an optical fiber, and the photoelectric conversion box is connected to the measurement and control host 1 through a USB cable, so that the electrical control signal of the measurement and control host 1 to the antenna signal selection circuit 41 is converted into the optical control signal by the photoelectric conversion box and sent to the antenna signal selection circuit 41, thereby controlling the measurement and control host 1 to 23 dual-polarized antennas 42, wherein the control includes selecting an acquisition signal of any one dual-polarized antenna 42 of the 23 dual-polarized antennas 42, and switching a horizontal probe and a vertical probe of the dual-polarized antenna 42. In an alternative embodiment, each dual-polarized antenna 42 has a horizontal probe and a vertical probe, which are respectively used for signal measurement in the horizontal direction and the vertical direction, including receiving signals from the wireless terminal under test in the horizontal direction and the vertical direction, and transmitting measurement signals to the wireless terminal under test in the horizontal direction and the vertical direction.
In an optional embodiment, the signal control analyzer is used for testing the transmitting power and the receiving sensitivity of the non-standard proprietary protocol wireless terminal. When the transmission power is tested, control information is sent to the wireless terminal to be tested on the rotary table 61 through the communication antenna 433, so that the wireless terminal to be tested enters a test mode, and then the radiation power of the wireless terminal to be tested is measured through the 23 dual-polarized antennas 42; when the receiving sensitivity is tested, test signals are respectively transmitted to the tested wireless terminal through the 23 dual-polarized antennas, the tested wireless terminal receives the test signals and transmits the tested signals to the signal control analyzer through a link established between the communication antenna 433 and the signal control analyzer or a link established between the wired interface 432 and the signal control analyzer through the wired interface 432 (at the moment, the wired interface 432 is connected with the tested wireless terminal), the signal control analyzer performs error code analysis according to the transmitted signals and the received signals, and the receiving sensitivity data is given by combining the transmitting power of the signal control analyzer.
In an alternative embodiment, the video signal of the camera 81 can be connected to an optical fiber converter outside the microwave darkroom through an optical fiber, and the optical fiber converter is further connected to the video monitoring host 82.
In an alternative embodiment, the number of the laser locators 7 can be two, and two beams of laser beams in the transverse direction and the longitudinal direction are respectively emitted to determine the center position of the dead zone, and the antenna of the wireless terminal to be measured is placed at the intersection point of the two laser beams as far as possible during measurement. The dead zone is an area with small ripples of communication electric waves in space, the tested wireless terminal can be tested accurately only when placed in the dead zone, and if the tested wireless terminal is placed outside the dead zone, the test data is inaccurate.
In an alternative embodiment, the integrated tester, the signal control analyzer, the network analyzer, the amplifying circuit 33, the first signal line connection circuit 31, the second signal line control circuit 32, the third signal line control circuit 431, and the antenna signal selection circuit 41 are all connected by coaxial cables.
In an alternative embodiment, the size of the inner space of the microwave dark room 5 is 3.5 m × 3.5.5 m × 3.5.5 m, the height of the turntable 61 is about 1.29 m, when the height of the turntable 61 is 1.29 m, the distance between the center of the turntable 61 and the 23 dual-polarized antennas 42 is 1.29 m, the diameter of the quiet zone is 30cm, in an alternative embodiment, the turntable 61 can be adjusted up and down, when the height of the turntable 61 is 1.29 m, the height of the turntable 61 can be lowered by 15 cm, namely, the height of the turntable 61 can be adjusted within the range of 1.04 m to 1.29 m.
In an alternative embodiment, the communication antenna 433 is a broadband antenna, with a typical frequency range of 400MHz to 6 GHz.
In this embodiment, the integrated tester is a CMW500 integrated tester, the internal configuration standards include 2G, 3G, 4G, Wi-Fi, BT, NB-IOT, and Zigbee network protocols, the signal control analyzer is a BS922-IOT signal control analyzer, and the internal configuration standard includes a BeeNet network protocol, where the BeeNet network protocol is a private network protocol and is a wireless sensor network protocol developed by a technology company based on the 802.15.4 standard, and the BeeNet network protocol is the prior art and is not described herein again.
In an alternative embodiment, two ventilation waveguide windows are respectively arranged on the parts, close to the top wall, of the two opposite side walls of the microwave anechoic chamber 5, and in an alternative embodiment, the ventilation waveguide windows are about 10 centimeters away from the top wall.
In an alternative embodiment, the motor controller further has a touch screen and a corresponding control interface, and the control of the rotation operation of the rotary table 61 can be manually performed through control in the control interface of the touch screen.
The embodiment of the utility model provides an in, the preceding stage link of each circuit is the link towards analysis test equipment 2 in wireless terminal signal testing arrangement's circuit, and the back end link of each circuit is the link towards being surveyed wireless terminal in wireless terminal signal testing arrangement's circuit.
The utility model discloses a wireless terminal signal testing device, utilize signal line control module and test signal transceiver module to establish the signal link from the multiple station analysis test equipment to the wireless terminal under test in the microwave dark room, and utilize the assistance of observing and controlling the host computer to carry out different analysis test equipment and the signal link connection between the wireless terminal under test in different signal test project time again, thereby realized carrying out the comprehensive tester of carrying out standard protocol test and carrying out the signal control analyzer of non-standard protocol test and carrying out the network analyzer of calibrating the link loss and measuring the passive antenna performance and combining together, realized the signal test of multiple standard and non-standard wireless terminal product, compared with the existing signal testing device that can only carry out single wireless terminal product, the wireless terminal signal testing device compatibility of the utility model is stronger, and the degree of automation is higher.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A wireless terminal signal testing apparatus, comprising:
the system comprises a measurement and control host, analysis and test equipment, a signal line control module, a test signal transceiving module and a microwave darkroom; wherein the content of the first and second substances,
the analysis test equipment is at least two and is respectively used for executing different signal test items;
a tested wireless terminal for executing signal testing is placed in the microwave darkroom;
the test signal transceiver module is in test signal communication with the wireless terminal to be tested;
the measurement and control host is electrically connected with the analysis test equipment, the signal line control module and the test signal transceiving module, and the signal line control module is electrically connected between a signal test port of the analysis test equipment and the test signal transceiving module;
the measurement and control host machine controls analysis test equipment used for executing the signal test items to execute the signal test items according to the signal test items, and controls the signal line control module to be connected with the signal lines in the test signal receiving and sending module, so that the analysis test equipment executing the signal test items is connected with the tested wireless terminal through the test signals.
2. The wireless terminal signal testing device of claim 1, wherein the signal line control module comprises:
a first signal line control circuit and a second signal line control circuit; wherein the content of the first and second substances,
the first signal line connecting circuit is provided with a first control end, a first front-stage connecting end and a first rear-stage connecting end, the first control end is electrically connected to the measurement and control host, at least two pairs of the first front-stage connecting ends are respectively and correspondingly electrically connected to signal testing ports of at least two pieces of analysis and test equipment, two first rear-stage connecting ends are provided, and the first signal line connecting circuit is controlled by the measurement and control host to be connected with a signal line between any pair of the first front-stage connecting ends and the first rear-stage connecting ends;
the second signal line control circuit is provided with a second control end, two first front-stage connecting ends and two second rear-stage connecting ends, the second control end is electrically connected to the measurement and control host, the two second front-stage connecting ends are electrically connected to the two first rear-stage connecting ends respectively, the two second rear-stage connecting ends are electrically connected to the test signal transceiving module, and the second signal line control circuit is controlled by the measurement and control host to connect a signal line between any one of the second front-stage connecting ends and any one of the second rear-stage connecting ends and connect a signal line between the other one of the second front-stage connecting ends and the other one of the second rear-stage connecting ends.
3. The wireless terminal signal testing device of claim 2, wherein:
the signal line control module also comprises a signal amplifying circuit;
the first signal line connecting circuit is also provided with a third rear-stage connecting end, the front-stage connecting end of the signal amplifying circuit is electrically connected with the third rear-stage connecting end, and the rear-stage connecting end of the signal amplifying circuit is electrically connected with the second front-stage connecting end;
the first signal line connecting circuit is controlled by the measurement and control host to connect a signal line between any pair of the first front-stage connecting ends and the third rear-stage connecting end, and the signal amplifying circuit amplifies the passing signals.
4. The wireless terminal signal testing device of claim 2, wherein said test signal transceiver module comprises:
the antenna signal selection circuit, the dual-polarized antenna and the signal connection module of the tested terminal; wherein the content of the first and second substances,
the dual-polarized antennas are arranged in the microwave darkroom and are circumferentially arranged and uniformly surround the tested wireless terminal, and the tested wireless terminal is positioned in the center of the circumference formed by the dual-polarized antennas and is used for executing signal receiving and transmitting of the signal test of the tested wireless terminal;
the antenna signal selection circuit is provided with a fourth signal control end, a fourth front-stage connecting end and a fourth rear-stage connecting end, the fourth signal control end is electrically connected to the measurement and control host, the fourth front-stage connecting end is electrically connected to one of the second rear-stage connecting ends, the fourth rear-stage connecting end is electrically connected to the dual-polarized antenna, and the antenna signal selection circuit establishes a signal circuit between any one dual-polarized antenna and the second signal circuit control circuit under the control of the measurement and control host;
the tested terminal signal connection module is electrically connected to the other one of the second rear-stage connection terminals and is in communication with the tested wireless terminal.
5. The wireless terminal signal testing device of claim 4, wherein the terminal signal connection module under test comprises:
a third signal line control circuit, a wired interface and a communication antenna; wherein the content of the first and second substances,
the third signal line control circuit is provided with a fifth control end, a fifth front-stage connecting end and a fifth rear-stage connecting end, the fifth control end is electrically connected to the measurement and control host, the fifth front-stage connecting end is electrically connected to the other connecting end of the second rear-stage connecting end, the number of the fifth rear-stage connecting ends is two, and the third signal line control circuit is controlled by the measurement and control host to be connected with a signal line between any one of the fifth front-stage connecting end and the fifth rear-stage connecting end;
the wired interface is positioned in the microwave darkroom, is electrically connected to one of the fifth rear-stage connecting ends, and is used for establishing wired communication connection with the wireless terminal to be tested;
the communication antenna is positioned in the microwave darkroom, is electrically connected to the other connecting end of the fifth rear-stage connecting ends, and is used for establishing wireless communication connection with the wireless terminal to be tested.
6. The wireless terminal signal testing device of any one of claims 1 to 5, wherein said analytical test equipment comprises:
at least two of the comprehensive tester, the signal control analyzer and the network analyzer.
7. The wireless terminal signal testing device of claim 4, further comprising:
the rotary table is arranged in the microwave darkroom and used for placing the wireless terminal to be tested, and a rotating shaft of the rotary table is vertical to a plane formed by the dual-polarized antennas;
and the driving component is electrically connected with the measurement and control host machine so as to drive the rotation of the rotary table under the control of the measurement and control host machine.
8. The wireless terminal signal testing device according to any one of claims 1 to 5, further comprising:
and the laser positioner is arranged in the microwave darkroom and used for transmitting laser to the placing position of the tested wireless terminal so as to present a laser spot at the placing position of the tested wireless terminal.
9. The wireless terminal signal testing device according to any one of claims 1 to 5, further comprising:
the camera is arranged in the microwave darkroom to shoot video information in the microwave darkroom;
the video monitoring host is electrically connected to the camera to display video information shot by the camera; and
and the light supplement lamp is arranged in the microwave darkroom, so that the light supplement is lightened when the camera shoots.
10. The wireless terminal signal testing device according to any one of claims 1 to 5, further comprising:
the ventilation waveguide window is arranged on the box body of the microwave darkroom, and the box body of the microwave darkroom is provided with an opening for installing the ventilation waveguide window.
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| CN201922266148.0U CN210927638U (en) | 2019-12-17 | 2019-12-17 | Wireless terminal signal testing device |
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| CN201922266148.0U CN210927638U (en) | 2019-12-17 | 2019-12-17 | Wireless terminal signal testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505389A (en) * | 2020-12-11 | 2021-03-16 | 湖南常德牌水表制造有限公司 | NB acquisition terminal automatic check device |
| CN114585001A (en) * | 2022-02-10 | 2022-06-03 | 武汉迈威通信股份有限公司 | Wireless performance test method and system |
-
2019
- 2019-12-17 CN CN201922266148.0U patent/CN210927638U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505389A (en) * | 2020-12-11 | 2021-03-16 | 湖南常德牌水表制造有限公司 | NB acquisition terminal automatic check device |
| CN114585001A (en) * | 2022-02-10 | 2022-06-03 | 武汉迈威通信股份有限公司 | Wireless performance test method and system |
| CN114585001B (en) * | 2022-02-10 | 2024-03-22 | 武汉迈威通信股份有限公司 | Wireless performance test method and system |
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