Novel wireless image transmission calibration testing device

Abstract

The utility model discloses a novel wireless image transmission calibration test device, which belongs to the technical field of electronic product test fixtures, and comprises a constant temperature device, a PC terminal, a calibration device and a ZYNQ 7045 chip, the constant temperature device is connected with a serial port module, the serial port module is connected with a wireless waveform transceiver module, the PC terminal is connected with a network cable module, and the calibration device is connected with the ZYNQ 7045 chip. The network cable module is connected with a programmable attenuator, and the programmable attenuator is connected with a fixed attenuator; according to the utility model, the calibration device and the core thereof are arranged to form the ZYNQ 7045 chip, the AD9361 module, the ARM processor, the FPGA module and the serial port module, the RSSI and frequency offset of the wireless waveform transceiver module can be calibrated by connecting the signal generator, and the transmitting power of the wireless waveform transceiver module can be calibrated by connecting the power meter. Therefore, the calibration device can realize the calibration functions of the multi-protocol wireless image transmission module under the cooperation of a plurality of components, wherein the calibration functions comprise power calibration, RSSI calibration and frequency offset calibration.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electronic product test fixture technical field, concretely relates to novel wireless map transmission calibration test device. BACKGROUND

[0002] 4G terminal product refers to the equipment or service that can carry out data transmission and communication through 4G network, and in the development or production process of WIFI or 4G terminal product, the module transmitting power, receiving signal strength, frame frequency deviation are generally calibrated, and the product sensitivity and throughput performance are evaluated.

[0003] The existing wireless calibration test device has single function, cannot comprehensively realize the calibration function of terminal product transmitting power, receiving signal strength, frame frequency deviation and realize the function of evaluating product sensitivity, throughput and other performances, thereby the application scene of line calibration test device is limited, therefore novel wireless map transmission calibration test device is needed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing novel wireless map transmission calibration test device to solve the problems in the background art.

[0005] In order to realize the above object, the utility model provides the following technical scheme: novel wireless map transmission calibration test device, including constant temperature device, PC end, calibration device and ZYNQ 7045 chip, the constant temperature device is connected with serial module, the serial module is connected with wireless wave transceiver module, the PC end is connected with network cable module, the network cable module is connected with programmable attenuator, the programmable attenuator is connected with fixed attenuator, the programmable attenuator is connected with power divider, the power divider is connected with N type female head A, the power divider is connected with N type female head B, the serial module is connected with shielded box, the shielded box is connected with measured module jig, the calibration device is connected with radio frequency feeder module, the calibration device is connected with network switch, the ZYNQ 7045 chip is connected with ARM treater, the ZYNQ 7045 chip is connected with FPGA module, the ZYNQ 7045 chip is connected with ethernet PHY, the ZYNQ 7045 chip is connected with SPI Flash module, the ZYNQ 7045 chip is connected with DDR3 DRAM module, the ZYNQ 7045 chip is connected with AD9361 module, the AD9361 module is connected with PA module, the AD9361 module is connected with LNA module, the PA module is connected with switch.

[0006] Through the setting of the above structure, the core of the calibration device is the ZYNQ 7045 chip and the AD9361 module and its radio frequency front end, and the calibration device can be configured through the network port, the ZYNQ 7045 chip built-in in the calibration device integrates an ARM processor and an FPGA module, the ARM processor and the FPGA module can realize multi-protocol wireless waveform modulation and demodulation, the software of the PC end can interact with the firmware running in the ARM through the network port, and then the configuration work of the calibration device is realized, the ARM processor can communicate with the PC end software through the network port, and then the management function of the calibration device is realized, and a plurality of serial port modules can be extended, so that the test of the measured board interface can be carried out, the working frequency band of the AD9361 module supports 70MHz-6GHz, the channel bandwidth supports the common configuration of 40MHz, 20MHz, 10MHz and 5MHz, the calibration device itself needs to be calibrated regularly, the transmitting power can be calibrated through the power meter, the RSSI and the frequency offset are calibrated through the signal source, so as to ensure the accuracy of the instrument, by connecting the signal generator, the RSSI and the frequency offset of the wireless waveform transceiver module can be calibrated, by connecting the power meter, the transmitting power of the wireless waveform transceiver module can be calibrated, so that the calibration device can realize the calibration function of the multi-protocol wireless image transmission module under the cooperation of a plurality of components, including power calibration, RSSI calibration and frequency offset calibration function.

[0007] As a preferred scheme, the network cable module is connected with the wireless waveform transceiver module.

[0008] As a preferred scheme, the power divider is connected with the wireless waveform transceiver module.

[0009] As a preferred scheme, the calibration device is connected with the serial port module.

[0010] As a preferred scheme, the measured module jig is connected with the calibration device.

[0011] As a preferred scheme, the radio frequency feeder module is connected with the measured module jig, the network switch is connected with the measured module jig, and the network switch is connected with the PC end.

[0012] As a preferred scheme, the AD9361 module is connected with the ZYNQ 7045 chip, and the switch is connected with the LNA module.

[0013] By setting AD9361 module, programmable attenuator, fixed attenuator, wireless waveform transceiver module and LNA module, in order to ensure that the sensitivity test has a larger dynamic range, the device integrates 0-60dB program-controlled attenuator, the program-controlled attenuator includes programmable attenuator and fixed attenuator, through the high dynamic range function of AD9361 module TXVGA, the wireless waveform transceiver module can realize-30dBM-20dBM, plus 30dB fixed attenuation, the whole can realize-10dBM-120dBM output dynamic range, at the same time, in order to protect the receiving circuit of LNA module and AD9361 module, when testing the transmitting power of the measured device, for example, 40dBM output power, by adjusting the programmable attenuator and fixed attenuator, the RSSI of AD9361 module can be ensured around-50dBM, so as to avoid the case that the signal is too strong, the AD9361 module is saturated, the measurement error is large, and even the device may be damaged.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] The utility model discloses a calibration device and its core component ZYNQ 7045 chip and AD9361 module and ARM treater, FPGA module and serial module are set up, and the core of calibration device is ZYNQ 7045 chip and AD9361 module and its radio frequency front end, can configure calibration device through the network port, and the built-in ZYNQ 7045 chip of calibration device integrates ARM treater and FPGA module, and ARM treater and FPGA module can realize multi -protocol wireless waveform modulation and demodulation, and the software of PC end can interact with the firmware running in the ARM, and then realize the configuration work of calibration device, and ARM treater can communicate with the PC end software through the network port, and then realize the management function of calibration device, and can extend multiple serial module, so that it can carry out the test of the interface of the measured board, and the working frequency band of AD9361 module supports 70MHz-6GHz, and the channel bandwidth supports the common configuration of 40MHz, 20MHz, 10MHz and 5MHz, and the calibration device needs to be calibrated regularly, and the transmitting power can be calibrated through the power meter, and the RSSI and frequency deviation are calibrated through the signal source, so as to guarantee the accuracy of the instrument, and the RSSI and frequency deviation of wireless waveform transceiver module can be calibrated through the connection signal generator, and the transmitting power of wireless waveform transceiver module can be calibrated through the connection power meter, so that the calibration device can realize the calibration function of multi -protocol wireless picture transmission module under the cooperation of multiple components, including power calibration, RSSI calibration and frequency deviation calibration function;

[0016] The utility model discloses, through setting up AD9361 module, programmable attenuator, fixed attenuator, wireless waveform transceiving module and LNA module, in order to guarantee the sensitivity test to have greater dynamic range, the integrated 0~60dB's program control attenuator in the device, and the program control attenuator includes programmable attenuator and fixed attenuator, and programmable attenuator can control through the network port, through the high dynamic range function of AD9361 module TXVGA, wireless waveform transceiving module can realize -30dBM~20dBM, plus 30dB fixed attenuation, whole can realize -10dBM~-120dBM output dynamic range, and in order to protect LNA module and AD9361 module's receiving circuit simultaneously, when testing the transmitting power of the equipment under test, for example 40dBM's output power, through adjusting programmable attenuator and fixed attenuator, can guarantee the RSSI of AD9361 module around -50dBM, thereby can avoid the situation that AD9361 module receives saturation due to signal too strong, leads to the measurement error is big even the equipment can be damaged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structure schematic drawing of the utility model working principle connection module;

[0018] Fig. 2 It is the structure schematic drawing of the utility model test connection module front view solid;

[0019] Fig. 3 It is the structure schematic drawing of the utility model ZYNQ 7045 chip connection.

[0020] In the drawing: 1, thermostat device;2, serial module;3, wireless waveform transceiving module;4, PC end;5, network cable module;6, programmable attenuator;7, fixed attenuator;8, power divider;81, N female head A;82, N female head B;9, calibration device;10, shield box;11, measured module jig;12, radio frequency feeder module;13, network switch;14, ZYNQ 7045 chip;141, ARM processor;142, FPGA module;15, Ethernet PHY;16, SPI Flash module;17, DDR3 DRAM module;18, AD9361 module;19, PA module;20, LNA module;21, switch. DETAILED DESCRIPTION

[0021] The utility model will be further described in connection with examples.

[0022] The following examples are used to illustrate the present application, but cannot be used to limit the protection scope of the present application. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements of the method of the present application under the concept of the present application all belong to the protection scope of the present application.

[0023] Please refer to Figs. 1-3The utility model provides a novel wireless graph transmits calibration testing arrangement, including constant temperature device 1, PC end 4, calibration device 9 and ZYNQ 7045 chip 14: constant temperature device 1 is controlled through serial ports, and constant temperature device 1 is connected with serial ports module 2, and serial ports module 2 is connected with wireless wave form transceiver module 3, and PC end 4 is connected with network cable module 5, and network cable module 5 is connected with programmable attenuator 6, and programmable attenuator 6 is controlled through network port, and programmable attenuator 6 is connected with fixed attenuator 7, and programmable attenuator 6 is connected with power divider 8, and power divider 8 is connected with N type female head A 81, and power divider 8 is connected with N type female head B 82, and serial ports module 2 is connected with shielded box 10, and shielded box 10 is connected with measured module jig 11, and calibration device 9 is connected with radio frequency feeder module 12, and calibration device 9 is connected with network switch 13, and ZYNQ 7045 chip 14 is connected with ARM treater 141, and ZYNQ 7045 chip 14 is connected with FPGA module 142, and ZYNQ 7045 chip 14 is connected with ethernet PHY, and ZYNQ 7045 chip 14 is connected with SPI Flash module 16, and ZYNQ 7045 chip 14 is connected with DDR3 DRAM module 17, and ZYNQ 7045 chip 14 is connected with AD9361 module 18, and AD9361 module 18 is connected with PA module 19, and AD9361 module 18 is connected with LNA module 20, and PA module 19 is connected with switch 21, through setting calibration device 9 and its core composition ZYNQ 7045 chip 14 and AD9361 module 18 and ARM treater 141, FPGA module 142 and serial ports module 2, the core of calibration device 9 is ZYNQ 7045 chip 14 and AD9361 module 18 and its radio frequency front end, can configure calibration device 9 through network port, and ZYNQ 7045 chip 14 built-in in calibration device 9 integrates ARM treater 141 and FPGA module 142, and ARM treater 141 and FPGA module 142 can realize multi-protocol wireless wave form modulation and demodulation, and the software of PC end 4 can interact with the firmware running in ARM through network port, to realize the configuration work of calibration device 9, ARM treater 141 can communicate with PC end 4 software through network port, to realize the management function of calibration device 9, and can extend multiple serial ports module 2, to make it can carry out the test of the interface of measured board, the working frequency band of AD9361 module 18 supports 70MHz~6GHz, and the channel bandwidth supports the common configuration of 40MHz, 20MHz, 10MHz and 5MHz, and calibration device 9 needs to be calibrated regularly, and the transmitting power can be calibrated through power meter, and RSSI and frequency deviation are calibrated with signal source, to guarantee the accuracy of instrument, through connecting signal generator, the RSSI and frequency deviation of wireless wave form transceiver module 3 can be calibrated, through connecting power meter, the transmitting power of wireless wave form transceiver module 3 can be calibrated,Thus, the calibration device 9 can realize the calibration function of the multi-protocol wireless image transmission module under the cooperation of multiple module assemblies, including power calibration, RSSI calibration and frequency offset calibration.

[0024] The network cable module 5 is connected with the wireless waveform transceiver module 3.

[0025] The power divider 8 is connected with the wireless waveform transceiver module 3.

[0026] The calibration device 9 is connected with the serial port module 2.

[0027] The measured module fixture 11 is connected with the calibration device 9.

[0028] The radio frequency feeder module 12 is connected with the measured module fixture 11, the network switch 13 is connected with the measured module fixture 11, and the network switch 13 is connected with the PC end 4.

[0029] The AD9361 module 18 is connected with the ZYNQ 7045 chip 14, the switch 21 is connected with the LNA module 20, and the AD9361 module 18, the programmable attenuator 6, the fixed attenuator 7, the wireless waveform transceiver module 3 and the LNA module 20 are arranged, so as to ensure a large dynamic range during sensitivity test, the device is integrated with a 0-60dB program-controlled attenuator, the program-controlled attenuator includes the programmable attenuator 6 and the fixed attenuator 7, through the high dynamic range function of the AD9361 module 18 TXVGA, the wireless waveform transceiver module 3 can realize-30dBM-20dBM, plus 30dB fixed attenuation, and the whole can realize-10dBM-120dBM output dynamic range, and simultaneously, in order to protect the receiving circuit of the LNA module 20 and the AD9361 module 18, when testing the transmitting power of the measured device, for example, 40dBM output power, the programmable attenuator 6 and the fixed attenuator 7 are adjusted, so as to ensure that the RSSI of the AD9361 module 18 is about-50dBM, so that the situation that the AD9361 module 18 is saturated due to too strong signal and causes large measurement error or even damage to the device can be avoided.

[0030] The working principle and use process of the utility model are as follows:

[0031] During test, the measured module is placed in the measured module fixture in the shielding box, and the following items can be calibrated:

[0032] 1, receive intensity RSSI calibration:

[0033] Wireless waveform transceiver module 3 enters the sending mode, measured module fixture 11 enters the receiving mode, adjusts the transmitting power of wireless waveform transceiver module 3 and the adjustable attenuation value, reads the RSSI of measured module fixture 11, writes the difference of the RSSI of wireless waveform transceiver module 3 and measured module fixture 11 into the measured device, switches the working frequency point, records the RSSI difference under different frequency points, and completes the module RSSI calibration.

[0034] 2. Transmitting power calibration:

[0035] Wireless waveform transceiver module 3 enters the receiving state, measured module fixture 11 enters the sending mode, adjusts the adjustable attenuation value of wireless waveform transceiver module 3, reads the RSSI of wireless waveform transceiver module 3, respectively tests the transmitting power of two antenna ports of the measured device, and records the current problem for subsequent transmitting power temperature compensation.

[0036] 3. Frequency offset calibration:

[0037] Wireless waveform transceiver module 3 enters the receiving state, measured module fixture 11 enters the sending mode and outputs a single tone signal, wireless waveform transceiver module 3 demodulates the single tone signal, performs FFT calculation, obtains the current single tone frequency, and further back calculates the transmitting signal frequency offset, PC end 4 adjusts the frequency offset of the measured board until the system requirement value is met, and writes down the current frequency offset calibration value.

[0038] 4. Sensitivity test:

[0039] Wireless waveform transceiver module 3 enters the sending mode, measured module fixture 11 enters the receiving mode, adjusts the transmitting power of wireless waveform transceiver module 3, and gradually increases the attenuation value of the adjustable attenuator, and configures MCS, records the RSSI value when the packet loss is 10% under different MCS, generates a log file, and saves it locally.

[0040] 5. Throughput rate test:

[0041] Wireless waveform transceiver module 3 enters the wireless-to-network interface transparent mode, wireless waveform transceiver module 3 transmits packets through the wireless interface, and receives the data transmitted by itself through the network port, and calculates the actual throughput rate under different MCS.

[0042] 6. Interface verification:

[0043] The serial port of measured module fixture 11 can be configured to enter the receiving or sending operation mode, and in the cooperation of wireless waveform transceiver module 3, the effectiveness of the serial port circuit communication is verified, and the reliability of the interface function is ensured when ensuring mass production.

[0044] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new wireless image transmission calibration test device, comprising a constant temperature device (1), a PC end (4), a calibration device (9) and a ZYNQ 7045 chip (14), characterized in that: The constant temperature device (1) is connected with a serial port module (2), the serial port module (2) is connected with a wireless waveform transceiver module (3), the PC end (4) is connected with a network cable module (5), the network cable module (5) is connected with a programmable attenuator (6), the programmable attenuator (6) is connected with a fixed attenuator (7), the programmable attenuator (6) is connected with a power divider (8), the power divider (8) is connected with an N type female head A (81), the power divider (8) is connected with an N type female head B (82), the serial port module (2) is connected with a shielding box (10), the shielding box (10) is connected with a measured module jig (11), the calibration device (9) is connected with a radio frequency feeder module (12), the calibration device (9) is connected with a network switch (13), the ZYNQ 7045 chip (14) is connected with an ARM processor (141), the ZYNQ 7045 chip (14) is connected with an FPGA module (142), the ZYNQ 7045 chip (14) is connected with an Ethernet PHY (15), the ZYNQ 7045 chip (14) is connected with an SPI Flash module (16), the ZYNQ 7045 chip (14) is connected with a DDR3 DRAM module (17), the ZYNQ 7045 chip (14) is connected with an AD9361 module (18), the AD9361 module (18) is connected with a PA module (19), the AD9361 module (18) is connected with an LNA module (20), and the PA module (19) is connected with a switch (21).

2. The novel wireless graph transfer calibration test device of claim 1, wherein: The network cable module (5) is connected with the wireless waveform transceiver module (3).

3. The novel wireless graph transfer calibration test device of claim 1, wherein: The power divider (8) is connected with the wireless waveform transceiver module (3).

4. The novel wireless graph transfer calibration test device of claim 1, wherein: The calibration device (9) is connected with the serial port module (2).

5. The novel wireless graph transfer calibration test device of claim 1, wherein: The measured module jig (11) is connected with the calibration device (9).

6. The novel wireless graph transfer calibration test device of claim 1, wherein: The radio frequency feeder module (12) is connected with the measured module jig (11), the network switch (13) is connected with the measured module jig (11), and the network switch (13) is connected with the PC end (4).

7. The novel wireless graph transfer calibration test device of claim 1, wherein: The AD9361 module (18) is connected with the ZYNQ 7045 chip (14), and the switch (21) is connected with the LNA module (20).

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