CN116318442A - Automatic test system of communication radio station equipment - Google Patents
Automatic test system of communication radio station equipment Download PDFInfo
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Abstract
The utility model discloses an automatic test system of communication radio equipment, wherein bear equipment provides the operation carrier for automatic test system, interface unit provides test interface for tested product and general instrument, control management equipment provides operation interface and the required control signal of tested product for automatic test system, realize the control of each equipment, radio frequency routing equipment has the test radio frequency routing equipment relation, realize PTT enable, power-on enable, bus control, forward key control and audio frequency routing etc. function, power supply route realizes program control power-on and current, voltage information acquisition, general instrument test is tested the performance index of tested product, can realize respectively that automatic setting product operating parameter and instrument operating parameter, automatic switch radio frequency route, automatic reading test data and quick function such as test record of generating through combining control management equipment and radio frequency routing equipment.
Description
Technical Field
The application relates to the field of radio product testing, in particular to an automatic testing system of communication station equipment.
Background
With the development of wireless communication products, the types of communication equipment are also becoming complicated and diversified, and communication stations are developed through the improvement of each stage, so that the wireless communication equipment is widely applied to scientific research and simultaneously applied to aspects of social life. However, some problems may occur in the application, for example, in the testing process, the communication station has different kinds, which cover various signals in different wave bands, and the used interfaces are inconsistent, so that the indexes and functions of the interface are diversified, which causes the problem of limited application of the communication station.
The existing test system of the communication terminal mainly relies on manual debugging of technicians, relevant parameters of equipment to be adjusted are set by controlling simulation software according to paper debugging process file guidance, debugging parameters are various, parameter deviation is easy to occur in manual setting, meanwhile, high-frequency manual switching is needed between a radio frequency interface and each instrument, abrasion is easy to occur on radio frequency debugging cables, the existing test system can only support single-set communication terminal for debugging production, and the problems that the instrument utilization rate is low, labor is consumed, production cycle is overlong, timely delivery of products is influenced and the like can also occur.
Therefore, in order to solve the above-described problems, a person skilled in the art needs to propose an effective solution therefor.
Disclosure of Invention
The utility model aims at overcoming the prior art defect, provides an automatic test system of communication radio station equipment, changes the manual mode of setting up of current test system into automatic setting, to radio frequency circuit automatic switch over and the parallel debugging of multimachine, reduced personnel debugging operation degree of difficulty and artificial interference factor, can be more reliable and stable, to a great extent improves the debugging production efficiency of product.
The purpose of the application is realized through the following technical scheme:
in a first aspect, the present application proposes an automatic test system for a communication station device, including: the system comprises bearing equipment, an interface unit, control management equipment, radio frequency routing equipment, a power supply route and a general instrument;
the bearing device is used for providing an operation carrier for the automatic test system;
the interface unit is used for providing a test interface for the tested product and the universal instrument;
the control management equipment is used for providing an operation interface and control signals required by the tested products for the automatic test system and controlling all equipment in the automatic test system;
the radio frequency routing equipment is used for testing the relation of the radio frequency routing equipment, realizing PTT (push-to-talk) enabling, power-on enabling, bus control, forwarding keying and audio routing;
the power supply route is used for realizing program-controlled power-up and current and voltage information acquisition;
the universal instrument is used for testing the performance index of the tested product.
In an alternative embodiment, the power route includes a programmable power supply for providing a stable dc power supply for the product under test and a power-on control box for power distribution of each input 28VDC, displaying the total input power supply voltage current and the voltage current of each output.
In an optional implementation manner, the radio frequency routing device comprises a PXI case, a PXI controller, a control card, a radio frequency switch network and a network switch, wherein the control interface type provided by the control card is LAN/USB/RS232/RS485/RS422/IO/GPIB, and the control interface type is used for controlling a tested product and a general instrument;
the radio frequency switch network is used for providing a connection relation between the tested product and the universal instrument;
the network switch is used for providing networking communication for the programmable power supply, the power-on control box, the universal instrument and the tested product.
In an alternative embodiment, the radio frequency switch network includes a plurality of radio frequency switches, where the radio frequency switches are a two-channel radio frequency switch, a three-channel radio frequency switch, a four-channel radio frequency switch, and a six-channel radio frequency switch, and each switch can be independently set to realize free combination switching.
In an alternative embodiment, the radio frequency switching network further comprises radio frequency components including (programmable) attenuators, (coaxial) attenuators, mismatched loads, shorted loads, open loads, U Duan Gaotong filters, V Duan Gaotong filters, and mixers.
In an alternative embodiment, the interface unit comprises: radio frequency interface, instrument radio frequency interface, PTT detection interface, audio interface, radio low frequency interface, key injection port, control box interface, power-on control mode switch, bus control mode switch and transfer key control switch.
In an alternative embodiment, the universal instrument comprises: communication radio station integrated tester, power meter, ESG vector signal source, frequency meter, MXA series spectrum analyzer and digital oscilloscope.
In an alternative implementation mode, the control management device is provided with a communication interface for exchanging data with a general instrument and devices on a system, and the communication interface is an RS485/RS422/RS232 protocol serial port with no less than 16 paths, so that multiple mode switching output is realized.
In an alternative embodiment, the interface unit further comprises a display panel as a display area for instruments and products.
The main scheme and each further option of the application can be freely combined to form a plurality of schemes, which are all schemes that can be adopted and claimed by the application; and the selection(s) of non-conflicting choices and other choices may be freely combined. Numerous combinations will be apparent to those skilled in the art upon review of the present application, and are not intended to be exhaustive or to be construed as limiting the scope of the invention.
The application discloses automatic test system of communication radio equipment, wherein bear equipment provides the operation carrier for automatic test system, interface unit provides test interface for tested product and general instrument, control management equipment provides operation interface and the required control signal of tested product for automatic test system, realize the control of each equipment, radio frequency routing equipment has the test radio frequency routing equipment relation, realize PTT enable, power enable, bus control, forward key control and audio frequency routing etc. function, power supply route realizes program control power up and current, voltage information acquisition, general instrument test is tested the performance index of tested product.
Compared with the prior art, the automatic test system provided by the embodiment of the application has the following beneficial effects:
firstly, provide test interface for tested product and general instrument through interface unit to provide the display panel who is the display area of instrument and product for entire system, because interface unit's rationally distributed makes it can compatible multi-model communication radio station equipment test, can also realize the purpose of the concurrent test of many sets of products.
Secondly, when the radio frequency routing equipment provided by the application faces different testing requirements, the connection relation between the tested product and the universal instrument provided by the radio frequency switch network can be utilized, the corresponding radio frequency channel is selected to automatically switch different testing links, and the radio frequency routing equipment can also realize the functions of PTT (push-to-talk) enabling, power-on enabling, bus control, forwarding keying, audio routing and the like.
Thirdly, every equipment and unit of test system that this application provided all carry out installation overall arrangement and wiring design, can improve the convenience of whole test system when wiring, ground connection and equipment operation, can also carry out quick connect to tested product and general instrument to the quick test record that generates.
Fourth, the control management equipment provided by the application can provide an operation interface and control signals required by the tested products for the automatic test system, so that the control of each equipment in the automatic test system is realized, and the provided operation interface can also realize the functions of automatic setting of the working parameters of the products and automatic setting of the working parameters of instruments.
Drawings
Fig. 1 shows a block diagram of an automatic test system for a communication station device according to an embodiment of the present application.
Fig. 2 shows a schematic diagram of an interface unit according to an embodiment of the present application.
Fig. 3 shows a schematic block diagram of a radio frequency switching network provided in an embodiment of the present application.
Fig. 4 shows a PTT enabled logic block diagram as proposed by an embodiment of the present application.
FIG. 5 illustrates a logic block diagram of power-up enabling provided by an embodiment of the present application.
Fig. 6 shows a logical block diagram of bus control proposed in an embodiment of the present application.
Fig. 7 shows a logical block diagram of audio routing proposed by an embodiment of the present application.
Fig. 8 shows a logic block diagram of power routing provided by an embodiment of the present application.
Fig. 9 shows a functional block diagram of an automatic test system provided by an embodiment of the present application.
Fig. 10 shows a functional view of an automatic test system provided in an embodiment of the present application.
Fig. 11 shows an overall block diagram of an automatic test equipment according to an embodiment of the present application.
Fig. 12 shows a schematic block diagram of 4-way power supply program-controlled switching according to an embodiment of the present application.
Fig. 13 shows a power supply design block diagram provided by an embodiment of the present application.
Detailed Description
Other advantages and effects of the present application will become apparent to those skilled in the art from the present disclosure, when the following description of the embodiments is taken in conjunction with the accompanying drawings. The present application may be embodied or carried out in other specific embodiments, and the details of the present application may be modified or changed from various points of view and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the prior art, in order to solve the problem of limited application of the communication radio station, a conventional manual testing instrument or a simple testing system with narrow pertinence is generally adopted to test the radio station, but many problems also occur, such as that the manual testing instrument needs to be manually operated, and needs to set parameters of the instrument according to requirements, which causes unnecessary waste of execution time of a case, so that a testing process is very slow, and errors occur in the manual setting, and the erroneous testing result is obtained. The parameters tested by the narrow and targeted simple testing system are limited, and all parameters of the communication radio station cannot be tested, so that the method has certain limitation.
Therefore, the embodiment of the application provides an automatic test system of a communication radio station, wherein the application scene is related to project-related instrument and material purchase, system research and development design, system implementation and delivery-related work and the like, and the automatic test system can also be used for automatic debugging and automatic test of links such as normal temperature debugging, normal temperature test and environmental test of communication radio station equipment. The radio frequency testing device can test various data of a communication radio station, and realize the functions of automatically setting product working parameters and instrument working parameters, automatically switching radio frequency routes, automatically reading test data, quickly generating test records and the like, and is described in detail below.
Referring to fig. 1, fig. 1 shows a block diagram of an automatic test system for a communication station device according to an embodiment of the present application, where the system includes: the system comprises a bearing device, an interface unit, a control management device, a radio frequency routing device, a power supply route and a general instrument.
Wherein the carrier device is used for providing the operation carrier for the automatic test system, the characteristic of the carrier device is: first, conventional instruments and various products having a load of not less than 440 Kg. Secondly, static is prevented, and the plane without instruments is tiled and fixed and grounded with the static-preventing pad. Thirdly, the weight is small, the movement is convenient, and the side running is not pushed. Fourth, forward wheel unidirectional rolling and backward wheel locking function are adopted, and 360-degree steering rolling can be realized, and the ground resistance is more than or equal to 1M ohm. Fifthly, the electric wire taking device is provided with a commercial power wire taking device, a common three-pin plug is adopted, the plug length is 10m, the plug can be wound into a disc, and the automatic shrinkage function is achieved through the fact that the total power is not less than 3 kw. Sixth, have the external earth connection, the external joint is the crocodile clamp, and length is 10m, can wind into the dish on the frame, has automatic shrink function. Seventh, have multichannel row to insert and get the electric interface for the instrument, under satisfying the instrument and getting the electric demand, remain 3 to 6 idle sockets, the rational distribution socket.
Referring to fig. 2, fig. 2 shows a schematic diagram of an interface unit according to an embodiment of the present application, where the interface unit includes: radio frequency interface, instrument radio frequency interface, PTT detection interface, audio interface, radio low frequency interface, key injection port, control box interface, power-on control mode switch, bus control mode switch and transfer key control switch. In addition, the interface unit also comprises a panel which is used as a display area of instruments and products, and the layout of the interface unit is reasonable and convenient to use.
The control management equipment is used for providing an operation interface and control signals required by the tested products for the automatic test system, controlling each equipment in the automatic test system, and the control management equipment is used as a control and management center of the whole system, provides the operation interface through a display, and can be fixed on the bearing equipment and has a KVM (K-virtual machine) storage function. The control management equipment is provided with interfaces for communicating with general instruments and other equipment on the system, the communication interfaces are at least 16 paths of RS485/RS422/RS232 protocol serial ports, and can realize multi-mode switching output, and the 115200, 9600 and other multi-speed adjustable interfaces. In addition, the control management device also has a dual-core processor, a processing frequency of 2.1GHz or more, a memory of 4G or more and a storage space of 256G or more.
The radio frequency routing equipment is used for testing radio frequency routing equipment relationship, realizing PTT (push-to-talk) enabling, power-on enabling, bus control, forwarding keying and audio routing and comprises a PXI (PCI extensions for instrumentation) chassis, a PXI controller, a control card, a radio frequency switch network and a network switch. The type of the PXI case can be selected from Tianao measurement and control SC58506 type, the type of the PXI controller can be selected from SC58109 type, and the PXI controller is used for carrying out resource management, providing an operating environment for the running of a test program, and carrying out radio frequency analysis on an output power signal through the test program so as to finish the detection of each parameter.
The control interface provided by the control card is LAN/USB/RS232/RS485/RS422/IO/GPIB, and is used for controlling the tested product and the universal instrument, the radio frequency switch network is used for providing the connection relation between the tested product and the universal instrument, and the network switch is used for providing networking communication for the program-controlled power supply, the power-on control box, the universal instrument and the tested product.
The radio frequency switch network provided in the embodiment of the application comprises a radio frequency component, wherein the radio frequency component further comprises a (program controlled) attenuator, a (coaxial) attenuator, a mismatched load, a short circuit load, an open circuit load, a U Duan Gaotong filter, a V Duan Gaotong filter and a mixer.
Referring to fig. 3, fig. 3 shows a schematic block diagram of a radio frequency switch network provided in an embodiment of the present application, where the radio frequency switch network can detect four radio stations to be tested simultaneously, and according to design requirements, the radio frequency switch network is implemented by PXI chassis design, so that access requirements of various excitation and analysis instruments required by a test station can be met simultaneously, and a radio frequency interface meets system test requirements and has an automatic program control capability. The frequency range of the radio frequency routing equipment is DC to 4GHz, the isolation is more than or equal to 70dB, the insertion loss of any path is less than or equal to 2dB, the standing wave of any path is less than or equal to 1.3dB, the insertion loss flatness of any path is less than or equal to 0.2dB in every 100MHz, the insertion loss uncertainty is less than or equal to 0.25dB, and the maximum tolerance power is more than or equal to 150W.
With reference to fig. 3, the radio frequency switch network is composed of a plurality of radio frequency switches, mainly including a two-channel radio frequency switch, a three-channel radio frequency switch, a four-channel radio frequency switch and a six-channel radio frequency switch, where each switch can be independently set and can realize free combination switching. The radio frequency switch is controlled to be closed to select the routing channel, and the setting and switching of routing links with different requirements are realized.
The radio frequency switch network comprises nine groups of double-channel radio frequency switches, a group of four-channel radio frequency switches, two groups of three-channel radio frequency switches, two groups of six-channel radio frequency switches, two attenuators, a digital program-controlled attenuator and a mixer, four devices to be tested are connected with the same double-channel radio frequency switch, the other end of the double-channel radio frequency switch can be connected with a four-channel radio frequency switch, the other end of the four-channel radio frequency switch is connected with a mismatched load, a short-circuit load, an open-circuit load and the attenuators, the attenuators can be directly used for providing attenuation protection for the whole circuit, and the attenuation effect of the whole circuit is better due to the adoption of the attenuators of 30 dB.
The other end of the attenuator is connected with a six-channel radio frequency switch, the six-channel radio frequency switch further selects a radio frequency channel through a received control signal, one port of the six-channel radio frequency switch is connected with a two-channel radio frequency switch, the port of the two-channel radio frequency switch is connected with a mixer and another two-channel radio frequency switch, each of the other five ports of the six-channel radio frequency switch is connected with a two-channel radio frequency switch, the purpose of selecting the radio frequency channel for the last time is achieved through the two-channel radio frequency switch, the other ends of the five two-channel radio frequency switches are respectively connected with an oscilloscope, a frequency meter, a comprehensive tester, a power meter and a three-channel radio frequency switch, and the three-channel radio frequency switch is connected with an electrically adjustable filter, a U Duan Gaotong filter and a V Duan Gaotong filter and is connected to a spectrum analyzer through another three-channel radio frequency switch, and in addition, radio frequency links can be expanded.
Referring to fig. 4, fig. 4 shows a PTT enabling logic block diagram provided in an embodiment of the present application, where the PTT enabling logic block diagram can control a tested radio station to send a signal, a digital board is an I/O board card, and receives and transmits an enabling signal (control information and current information), a path from the digital board to the tested radio station has four paths, the enabling signal of each path can be programmed, and the current carrying capacity is not lower than 300mA, and outputs a grounding/suspending signal. In addition, each path is connected with the tested radio station through a radio station low-frequency interface and also connected with a PTT detection interface positioned at the interface unit.
The radio frequency routing device can realize power-up enabling, based on fig. 4, fig. 5 shows a logic block diagram of power-up enabling provided by the embodiment of the application, and unlike the above PTT enabling logic block diagram, each path of power-up enabling selects a mechanical switch, power-up enabling can be performed by two power-up modes of a control box and a system program control, the system program control power-up enabling adopts the same mode as the above PTT enabling, and the control box power-up enabling can realize open power-up through rotation of a switch knob.
Referring to fig. 6, fig. 6 shows a logic block diagram of bus control and forwarding keying according to an embodiment of the present application, under bus control, the switch 1 may be located at a ground or an open circuit, and is also selected by a mechanical switching degree path, and is divided into two modes, namely, a ground control box and an open circuit bus, where the mechanical switch is fixed on a panel of the interface unit, outputs a ground or suspension signal, and the pins of the low-frequency interface are 16 pins.
When the radio frequency routing equipment realizes forwarding keying, the pins of the low frequency interface are 48 pins, the state switched by the mechanical switch is in two modes of grounding forwarding and suspending invalidation, the pins of the low frequency interface are different, and the rest parts are the same. The method is divided into two modes of grounding forwarding and suspension invalidation, wherein a mechanical switch is fixed on a panel of an interface unit, and outputs a grounding or suspension signal.
Referring to fig. 7, fig. 7 shows a logic block diagram of an audio route according to an embodiment of the present application, where one path can be divided into eight paths by an eight-channel radio frequency switch, and a transceiver function of a radio station audio is jointly implemented by four paths of audio transmission, four paths of broadband audio transmission, four paths of audio reception and four paths of broadband audio reception.
The power supply route is used for realizing program-controlled power-up and current and voltage information acquisition and comprises a program-controlled power supply and a power-up control box, wherein the power supply route comprises the program-controlled power supply and the power-up control box, the program-controlled power supply is used for providing a stable direct current power supply for a tested product, and the power-up control box is used for carrying out power distribution on 28VDC input in each path, displaying total input power supply voltage and current and voltage and current output in each path. The power-on control box is independently designed, so that the system can supply power for 4 tested devices at the same time, each power supply is independently controlled, voltage and current monitoring of each power supply is realized, and stable power supply guarantee is provided for device test power supply.
Referring to fig. 8, fig. 8 shows a logic block diagram of power routing provided in an embodiment of the present application. The method is mainly divided into three parts: front panel, back panel and internal link. The front panel displays current information and voltage information of four system power supplies, respectively, and the rear panel includes a mains (220V/50 Hz) input, a switch, and a LAN interface. The internal link controls the liquid crystal display to display current/voltage information, detect voltage and current information and control the electronic switch through the digital circuit board, the +28V voltage supplies power to the radio station through the four-way electronic switch, the current/voltage detection and the radio station low-frequency interface respectively, the digital board conducts power-on control on the electronic switch, and the voltage/current detection sends the voltage and current information to the digital board. The power supply route has four paths altogether, has overvoltage and overcurrent protection function, can realize program control power up, current and voltage information acquisition display and the passback transmission of every 1 path to processing equipment, wherein the bearing voltage is not less than 40V, the current is not less than 15A, the voltage monitoring error is not more than 0.5V, the current monitoring error is not more than 0.2A, the voltage drop of a power supply cable from a power supply direct current power supply to a tested piece is not more than 3% of the power supply voltage, and all requirements of system test low-frequency interface connection can be met.
The power indexes required by the automatic test system are as follows: the power supply device has the power supply capability of direct current of 0 to +40V, the voltage range of 0 to +40V, the current of 30A, the power of 2400W or more, the automatic program control capability, the load effect of better than 1 percent and the surge: better than 5% and ripple better than 2%.
A universal instrument for testing performance metrics of a product under test, comprising: communication radio station integrated tester, power meter, ESG vector signal source, frequency meter, MXA series spectrum analyzer and digital oscilloscope.
In addition, when installing the overall arrangement and walk line wiring design to automatic test system, in order to make things convenient for operation and the use of wiring, ground connection and equipment, adopt connector and cable tied in a bundle and test cable to connect test system's time to be less than 2 minutes, many cables of the same trend adopt the braided sleeve to be bundled, can the quick connect to be surveyed the product, the information such as product name, model, serial number can be marked to the metal nameplate that automatic test system adopted, and the cable both ends surface that adopts has clear unique and goes to the sign, and the middle part surface has unique name and serial number sign.
Next, referring to fig. 9, fig. 9 shows a schematic block diagram of an automatic test system provided in an embodiment of the present application, where a control management device and a radio frequency routing device respectively perform information transmission with an RS422/485/232 serial port card, a network switch, an I/O control card, a multiplexing switch card, and a general instrument, and are connected through a control line. All the devices in the universal instrument are respectively connected with the interface unit through radio frequency wires, the interface unit is respectively connected with the control box, the key injection device, the machine communication/terminal and the radio station to be tested through low-frequency radio frequency mixed wires, and is also connected with the RS422/485/232 serial port card, the network switch and the I/O control card through low-frequency wires, and is connected with the multiplexing switch card through the radio frequency assembly.
The automatic test system takes control management equipment and radio frequency routing equipment as cores, utilizes buses such as GPIB, LAN and the like to connect hardware resources, and combines the equipped test software to control various general test instruments and special test instruments to finish debugging and testing related parameters of tested products, thereby realizing the functions of automatic setting of working parameters of products, automatic setting of instrument working parameters, automatic switching of radio frequency routing, automatic reading of test data, rapid generation of test records and the like.
In addition, referring to fig. 10, fig. 10 shows a functional view of an automatic test system provided in the embodiment of the present application, where a programmable power supply and a power-on control box jointly implement a product power-on function, test software, a PXI chassis and a control card implement a control function of the automatic test system, a comprehensive tester, a power meter, an ESG vector signal source, a frequency meter, an MXA series spectrum analyzer, a digital oscilloscope and test software implement measurement of signals, and a switch matrix and test software implement an instrument switching function.
Referring to fig. 11, fig. 11 shows an overall block diagram of an automatic test device according to an embodiment of the present application, where the device mainly includes a man-machine display control interface, a bottom control interface, and a voltage and current acquisition unit. The whole system is positioned in the case, and signals are led out through the aviation plug and provided for other equipment. The aviation plug corresponds to a radio station low-frequency interface of the automatic test system, a development board STM32F407 is used as a digital board of the automatic test system, a main power supply sends four paths of 28V power supplies to an isolated voltage acquisition module and a Hall current sensor, and functions of voltage and current monitoring, SPI configuration and time limit calculation are completed through an FPGA. The power rail voltage is collected by adopting an isolated voltage collection circuit design, and the current is converted into corresponding digital quantity through 16bit/AD sampling by adopting a Hall sensor design. The over-current protection is to adopt FPGA to send data, control DA to convert into corresponding analog output, then control the comparison switch to control output current, when the current exceeds the preset current, turn off the current input, the over-voltage protection directly collects the input voltage, the single voltage is larger than the set value, and the FPGA directly turns off the power supply.
Based on FIG. 11 and FIG. 12, FIG. 12 shows a schematic block diagram of 4-channel power supply program-controlled switching, in which four channels of 28V power supply outputs are shared, the load voltage of each channel of power supply is not less than 40V, the current is not less than 15A, and the purpose of 4-channel output of the program-controlled switching of the input power supply is achieved by switching the power switch by selecting a high-power mos tube
In one possible implementation, the power supply route in the automatic test system is powered if an AC-DC module is employed. The power input interface provides 5V voltage, and the power source from the button switch to the ADP5052 has 1V, 1.2V, 1.5V, 1.8V, 3.3V, 5V, and a FPGA, PHY, RS232 transceiver, etc., please refer to fig. 13, fig. 13 shows a power supply design block diagram provided in the embodiment of the present application, and the power-on time sequence of the ADP5052 is 1.2v→1.5v→1.8v→3.3V. Table 1 shows the device power consumption in the power supply design block diagram, table 1 is as follows:
TABLE 1
In addition, because of taking modular design and later expansion capability into consideration, the radio frequency switch network is built by the PXI chassis to provide a plurality of groups of switches, the radio frequency ports of the whole machine to be tested are connected to user-specific test equipment, the module to be tested is tested, the PXI chassis is connected with one of a plurality of interfaces of the interface panel through a system controller, besides the plurality of radio frequency switch modules in the PXI chassis are connected with the interfaces on the interface panel, different radio frequency switch modules can be directly connected or connected through independent devices or equipment, wherein the independent devices or equipment can be UV filters or mixers.
The automatic testing device mainly comprises a PXI case (comprising a PXI controller, a double-channel radio frequency switch, a four-channel radio frequency switch and a six-channel radio frequency switch module), a radio frequency assembly and an interface panel, wherein during installation, the PXI case is installed on a cabinet tray and occupies 4U space, the case is just opposite to the front panel and is an interface panel, the interface panel is installed on the back of the cabinet, wiring is facilitated, and the design of the radio frequency switch network panel and the integration of a low-frequency part are integrated into a whole. The connection between the various parts of the automatic test equipment takes the form of stainless steel screws plus sealing rings. After the assembly is completed, the overall external dimension is 482.6mm multiplied by 444mm multiplied by 132.5mm, one power supply is internally related to be converted into 4 paths of output, and the rated current is designed to be 15A, so that the current distribution and heat dissipation are considered.
Compared with the prior art, the automatic test system provided by the embodiment of the application has the following beneficial effects:
firstly, provide test interface for tested product and general instrument through interface unit to provide the display panel who is the display area of instrument and product for entire system, because interface unit's rationally distributed makes it can compatible multi-model communication radio station equipment test, can also realize the purpose of the concurrent test of many sets of products.
Secondly, when the radio frequency routing equipment provided by the application faces different testing requirements, the connection relation between the tested product and the universal instrument provided by the radio frequency switch network can be utilized, the corresponding radio frequency channel is selected to automatically switch different testing links, and the radio frequency routing equipment can also realize the functions of PTT (push-to-talk) enabling, power-on enabling, bus control, forwarding keying, audio routing and the like.
Thirdly, every equipment and unit of test system that this application provided all carry out installation overall arrangement and wiring design, can improve the convenience of whole test system when wiring, ground connection and equipment operation, can also carry out quick connect to tested product and general instrument to the quick test record that generates.
Fourth, the control management equipment provided by the application can provide an operation interface and control signals required by the tested products for the automatic test system, so that the control of each equipment in the automatic test system is realized, and the provided operation interface can also realize the functions of automatic setting of the working parameters of the products and automatic setting of the working parameters of instruments.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.
Claims (9)
1. An automatic test system for communication station equipment, comprising: the system comprises bearing equipment, an interface unit, control management equipment, radio frequency routing equipment, a power supply route and a general instrument;
the bearing device is used for providing an operation carrier for the automatic test system;
the interface unit is used for providing a test interface for the tested product and the universal instrument;
the control management equipment is used for providing an operation interface and control signals required by the tested product for the automatic test system and controlling each equipment in the automatic test system;
the radio frequency routing equipment is used for testing the relation of the radio frequency routing equipment, realizing PTT (push-to-talk) enabling, power-on enabling, bus control, forwarding keying and audio routing;
the power supply route is used for realizing program-controlled power-up and current and voltage information acquisition;
the universal instrument is used for testing the performance index of the tested product.
2. The automatic test system of a communication station apparatus of claim 1 wherein said power supply route includes a programmable power supply for providing a stable dc power supply to a product under test and a power-on control box for power distribution to each incoming 28VDC, said power-on control box further for displaying a total input power supply voltage current and each outgoing voltage current.
3. The automatic test system of communication station equipment as recited in claim 1, wherein the radio frequency routing equipment comprises a PXI chassis, a PXI controller, a control card, a radio frequency switch network and a network switch, wherein the PXI chassis is used for carrying the PXI controller, the control card, the radio frequency switch network and the network switch, and the PXI controller, the control card, the radio frequency switch network and the network switch are all connected with a tested product and a general instrument;
the PXI controller is used for carrying out resource management, providing an operating environment for the running of the test program, carrying out radio frequency analysis on the output power signal through the test program, and completing the detection of each parameter;
the control interface provided by the control card is of the type of LAN/USB/RS232/RS485/RS422/IO/GPIB and is used for controlling the tested products and the general-purpose instruments; the radio frequency switch network is used for providing a connection relation between the tested product and the universal instrument;
the network switch is used for providing networking communication for the programmable power supply, the power-on control box, the universal instrument and the tested product.
4. The automatic test system of communication station equipment as recited in claim 3 wherein said radio frequency switch network comprises a plurality of radio frequency switches, the radio frequency switches being two-channel radio frequency switches, three-channel radio frequency switches, four-channel radio frequency switches and six-channel radio frequency switches, each switch being independently configurable to effect free combination switching.
5. The automatic test system of a communication station apparatus of claim 3 wherein the radio frequency switching network further comprises radio frequency components including a programmable attenuator, a coaxial attenuator, a mismatched load, a shorted load, an open load, a U Duan Gaotong filter, a V Duan Gaotong filter, and a mixer.
6. The automatic test system of a communication station apparatus of claim 1 wherein said interface unit comprises: one or more of a radio frequency interface, an instrument radio frequency interface, a PTT detection interface, an audio interface, a radio low frequency interface, a key injection port, a control box interface, a power-on control mode switch, a bus control mode switch and a transfer key control switch.
7. The automatic test system of a communication station apparatus of claim 1 wherein said generic instrument comprises: one or more of a communication station integrated tester, a power meter, an ESG vector signal source, a frequency meter, an MXA series spectrum analyzer and a digital oscilloscope.
8. The automatic test system of communication station equipment according to claim 1, wherein the control management equipment is provided with a communication interface for exchanging data with a general instrument and equipment on the system, and the communication interface is an RS485/RS422/RS232 protocol serial port with no less than 16 paths, so that multiple mode switching output is realized.
9. The automatic test system of a communication station apparatus of claim 1 wherein the interface unit further comprises a display panel as a display area for instruments and products.
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