CN115361326A

CN115361326A - Debugging system and debugging method for miniature numerical control electrically tunable filter

Info

Publication number: CN115361326A
Application number: CN202211028732.2A
Authority: CN
Inventors: 张怀银; 陈国兴; 段丽娜; 陈凯岳
Original assignee: Tianjin Zhenhai Technology Co ltd
Current assignee: Tianjin Zhenhai Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-18

Abstract

The invention discloses a debugging system and a debugging method of a miniature numerical control electrically tunable filter, which comprises a power supply, an upper computer, a lower computer and a network analyzer; the upper computer sends a debugging instruction to the lower computer, analyzes the data returned by the lower computer, sets a network analyzer and analyzes the captured data to carry out closed-loop debugging; the lower computer completes analysis and execution of the adjusting and controlling instruction and feeds back an execution result by taking a secondary power supply, an ammeter, a microcontroller, a serial port level conversion and adjusting and measuring tool as a core; the network analyzer is used for capturing debugging data. The debugging system and the debugging method can perform initial checking, rough adjusting and fine adjusting of the performance of the miniature numerical control electrically tunable filter, normal temperature and environment testing and data storage, complete debugging and measuring of an ultrashort wave full-frequency band product for about 30 minutes, greatly improve the working efficiency compared with manual debugging and measuring for nearly 10 hours, control the debugging and measuring quality by an upper computer, and ensure the first pass rate and the performance quality of batch products.

Description

Debugging system and debugging method for miniature numerical control electrically tunable filter

Technical Field

The invention relates to the technical field of military handheld communication radio stations, in particular to a debugging system and a debugging method of a miniature numerical control electrically tunable filter.

Background

The miniature numerical control electrically tunable filter is the first choice of the handheld communication equipment due to the excellent performance and the small size of the miniature numerical control electrically tunable filter. According to the principle, the miniature numerical control electrically tunable filter is a product combining a numerical control technology and an analog filter, and the product volume is reduced on the basis of ensuring the reliable communication by adopting SPI communication. After the SPI interface of product received the instruction that last level sent, handle through inside MCU, turn into bias voltage with the instruction and apply on the internal varactor of product, thereby can obtain different capacitance values through applying different bias voltage and change miniature numerical control electrically tunable filter's filtering channel and realize the frequency hopping.

Generally, an MCU (microprogrammed control unit) applied to the interior of a miniature numerical control electrically tunable filter is provided with a 12-bit DAC (digital-to-analog converter), which means that 4096 digital codes correspondingly generate 4096 voltages, the performance of a filtering channel corresponding to the 4096 voltages applied to a variable capacitance diode needs to be observed during debugging, a certain number of optimal digital codes which meet the index requirements of a product are screened out and then solidified in the product, and the core of debugging the miniature numerical control electrically tunable filter is realized. Traversing the center frequency, insertion loss, bandwidth, rectangular coefficient and far-end inhibition data of 4096 filtering channels, screening out the optimal combination from the data, and solidifying the digital code corresponding to the optimal combination in the product, which means that accurate recording, analysis and screening from a large batch of data are required.

In the past, research and development or production personnel adopt a single-code transmission mode to debug the starting point, the end point, the in-band index and the out-of-band index of a frequency band when initially debugging a product, manually judge whether the debugging index meets the requirement or not by combining the requirement of the index, and need to send the single code to traverse when the index is finely tuned

The filter channels (n refers to the number of bits of the MCU with the DAC) collect the center frequency, the insertion loss, the bandwidth, the rectangular coefficient and the far-end inhibition data. In such a mode, a large amount of data needs to be manually recorded and analyzed, and digital codes meeting requirements are screened out and solidified in a product through a computer. The disadvantages of this debugging method are:

(1) The initial adjustment needs manual multiple times of single code sending of digital codes, go to debug, record, analysis, screening and the artifical index of assessing the whole frequency channel, if the aassessment deviation appears, this deviation can only be found when the fine adjustment, if this kind of condition appears, the work of doing in the fine adjustment stage next is all invalid, need get back to the initial adjustment once more, greatly influences debugging efficiency.

(2) During fine adjustment, a large batch of data needs to be sent, recorded and processed manually and continuously through a single code, errors are easy to occur due to fatigue, and great hidden dangers exist in the performance of products.

(3) The difference of the filter coils and the difference of the variable capacitance diodes on the batch of products and the optimal digital codes of different products are different, namely the optimal digital codes on different products need to be adjusted during debugging

All the combined tuning channels need to be subjected to targeted debugging such as traversing and screening, the workload generated by batch manufacturing is too large, and the capacity is extremely difficult to meet the actual requirements.

(4) In an environment experiment, the operation speed of sending and recording data by single codes is slow, so that the performance of a product in the environment is difficult to truly reflect by the debugging mode.

(5) The debugging mode of single code transmission seriously shortens the service life of the instrument because the instrument needs to be repeatedly and manually set.

Therefore, it is necessary to design a debugging system and an efficient debugging method for the miniature numerical control electrically tunable filter.

Disclosure of Invention

The invention aims to solve the problems of low debugging efficiency and poor performance quality straight-through rate in the background technology, and provides a debugging system and a debugging method for a miniature numerical control electrically tunable filter. The debugging system and the debugging method are efficient, high in performance quality first pass efficiency and reliable, and are used for carrying out normal-temperature initial debugging, frequency band performance initial check, performance traversal of all frequency hopping channels in a frequency band, digital code screening and solidification, normal-temperature total test and data output recording of a product, environment test and test output recording in the research and development and batch manufacturing processes of the miniature numerical control electrically tunable filter.

The technical scheme adopted by the invention for realizing the purpose is as follows: a debugging system of a miniature numerical control electrically tunable filter comprises the miniature numerical control electrically tunable filter, wherein the debugging system comprises a power supply, an upper computer, a lower computer and a network analyzer; the upper computer is connected with a miniature numerical control electric adjusting filter arranged on the adjusting tool through an adjusting platform in the lower computer, one path of the network analyzer is connected with the upper computer, the other path of the network analyzer is connected with the miniature numerical control electric adjusting filter on the adjusting tool, and the power supply is connected with a secondary power supply in the lower computer; the upper computer is pre-installed with a program control interface and a network analyzer driver, sends a debugging instruction to the lower computer through the program control interface, receives and analyzes the instruction returned by the lower computer and completes corresponding instruction action, completes the setting and calling of the network analyzer through the network analyzer driver, captures and analyzes debugging data, and saves a debugging result; the debugging platform in the lower computer is used for analyzing various control instructions sent by the upper computer and sending the control instructions to the miniature numerical control electrically tunable filter through the debugging tool; the network analyzer is used for capturing data of the miniature numerical control electrically tunable filter and providing the data to the upper computer.

The lower computer comprises a regulating and measuring platform, an ammeter A1, an ammeter A2 and a regulating and measuring tool; the debugging platform comprises a secondary power supply, a serial port level conversion I, a serial port level conversion II and a microcontroller; the secondary power supply is respectively connected with a serial port level conversion I, a serial port level conversion II and a microcontroller, a Vbb of the secondary power supply is connected with a pin 1 of a strip line interface of a debugging tool through an ammeter A1, a Vcc is connected with a pin 2 of the strip line interface of the debugging tool through an ammeter A2, the serial port level conversion II is connected with

pins

4, 5, 6 and 7 of the strip line interface of the debugging tool through the microcontroller, the serial port level conversion I is connected with

pins

9 and 10 of the strip line interface of the debugging tool, the microcontroller is connected with

pins

3 and 8 of the strip line interface of the debugging tool, and the debugging tool further comprises a micro numerical control electric regulation filter installation interface and a test cable interface; the serial port level conversion I is used for the serial port communication between the host computer and the miniature numerical control electrically tunable filter installed on the debugging tool to complete the debugging work of the miniature numerical control electrically tunable filter; the serial port level conversion II is used for the serial port communication between the upper computer and the microcontroller; the microcontroller receives and analyzes the test instruction sent by the upper computer through the serial port level conversion II, converts the test instruction into an SPI data format to realize communication with the miniature numerical control electric regulation numerical control filter and realize test control on the miniature numerical control electric regulation filter; the secondary power supply Vcc is used for supplying power to the serial port level conversion I, the serial port level conversion II, the microcontroller and the low-voltage part of the miniature numerical control electrically tunable filter installed on the debugging tool, and the secondary power supply Vbb is used for supplying power to the offset part of the miniature numerical control electrically tunable filter installed on the debugging tool; the ammeter A1 and the ammeter A2 are used for monitoring the low-voltage power consumption and the bias power consumption of the miniature numerical control electrically tunable filter mounted on the debugging and testing tool in real time; the miniature numerical control electrically tunable filter installation interface of the debugging tool is used for installing the debugged miniature numerical control electrically tunable filter, and the test cable interface is used for connecting a network analyzer.

The serial port level conversion I takes a main control chip U4 as a core, a pin 1 of the main control chip U4 is connected with a pin 3 of the main control chip U4 through a capacitor C23, a pin 2 is grounded through a capacitor C22, a pin 4 is connected with a pin 5 through a capacitor C24, a pin 6 is grounded through a capacitor C25, a pin 11 is connected with a pin 10 of a debugging tool strip line interface XP5, a pin 12 is connected with a pin 9 of the debugging tool strip line interface XP5, a pin 13 is connected with a pin 3 of a serial port XP4 through a resistor R11, a pin 14 is connected with a pin 4 of the serial port XP4 through a resistor R10, a pin 15 is grounded, a pin 16 is grounded through a capacitor C26 and a capacitor C27, and a pin 1 of the serial port XP4 is grounded; the model of the main control chip U4 is MAX3232.

The input anode of the secondary power supply is connected with a single-pole double-throw switch S1 in series and is respectively connected with one end of a capacitor C1 and a pin 1 of a common mode suppressor L1, the input cathode of the secondary power supply is connected with a pin 3 of the common mode suppressor L1 and the other end of the capacitor C1 and then is grounded, a pin 2 of the common mode suppressor L1 is respectively connected with one end of a capacitor C2 and one end of an inductor L2, the other end of the inductor L2 is respectively connected with one end of a capacitor C3 and an input anode + Vin of a DC/DC module U1, a pin 4 of the common mode suppressor L1 is connected with the capacitor C2, the other end of the capacitor C3 and the input cathode GND of the DC/DC module U1, the output anode Vout1 of the DC/DC module U1 is respectively connected with one end of the inductor L3 and one end of the capacitor C4, the other end of the inductor L3 is connected with one end of a capacitor C5 and serves as an output cathode Vcc, the other ends of the capacitor C4 and the capacitor C5 are connected with the output cathode GND of the DC/DC module U1 and then are grounded, the output anode Vout2 of the capacitor L4 and the other end of the capacitor C7 is connected with one end of the capacitor C6 and the output cathode COM of the capacitor C7 and the capacitor C6.

The DC/DC module U1 is an isolated power supply, and the input range is 18-36V; the input positive pole comprises a common mode suppression circuit formed by a capacitor C1, an inductor L1 and a capacitor C2, the inductor L2 and a capacitor C3 form a differential mode suppression circuit, the output positive pole Vout1 comprises a differential mode suppression circuit formed by a capacitor C4, an inductor L3 and a capacitor C5, then the output Vcc is 3.3V, and the output positive pole Vout2 comprises a differential mode suppression circuit formed by a capacitor C6, an inductor L4 and a capacitor C7, then the output Vbb is 22V.

The serial port level conversion II takes a main control chip U3 as a core, an XP3 as a serial port socket, a pin 1 of the main control chip U3 is connected with a pin 3 through a capacitor C17, a pin 2 is grounded through a capacitor C16, a pin 4 is connected with a pin 5 through a capacitor C18, a pin 6 is grounded through a capacitor C19, a pin 11 is connected with a pin 3 of a microcontroller U2, a pin 12 is connected with a pin 2 of the microcontroller U2, a pin 13 is connected with a pin 3 of the serial port socket XP3 through R9, a pin 14 is connected with a pin 4 of the serial port socket XP3 through R8, a pin 15 is grounded, a pin 16 is grounded through a capacitor C20 and a capacitor C21, and a pin 1 of the serial port socket XP3 is grounded; the model of the main control chip U3 is MAX3232.

The microcontroller comprises a main control chip U2, an active 7.3728M crystal oscillator XT1 and a 10-pin drive download interface XP2; the pin 1 of the main control chip U2 is connected with a power supply Vcc through a resistor R1, one path of a pin 20 of the main control chip U2 is connected with the cathode of a diode D2 and the power supply Vcc through a resistor R2, the other path of the pin is connected with one end of a capacitor C11 and the ground through a switch S2, the other end of the capacitor C11 is connected with the anode of the diode D2, a pin 24 of the main control chip U2 is connected with a pin 3 of an active 7.3728M crystal oscillator XT1, a pin 2 of the active 7.3728M crystal oscillator XT1 is grounded, and a pin 4 is grounded through a capacitor C15; the pin 64 of the main control chip U2 is respectively connected with one end of a capacitor C9 and one end of an inductor L5, the other end of the inductor L5 is connected with the other end of the capacitor C9, one end of a capacitor C10, the pin 63 of the main control chip N1 and the ground through a capacitor C8, and the other end of the capacitor C10 is connected with the pin 62 of the main control chip U2; the pin 21 and the pin 52 of the main control chip U2 are respectively connected with one end of a capacitor C12 and one end of a capacitor C13, the other ends of the capacitor C12 and the capacitor C13 are connected with the pin 22 and the pin 53 of the main control chip N1, one end of a resistor R3 and the ground, the pin 33 of the main control chip N1 is connected with the other end of the resistor R3 through a diode D1, one ends of a resistor R4, a resistor R5, a resistor R6 and a resistor R7 are respectively connected with a power supply Vcc, the other end of the resistor R4 is connected with the pin 54 of the main control chip U2, the other end of the resistor R5 is connected with the pin 55 of the main control chip U2, the other end of the resistor R6 is connected with the pin 56 of the main control chip U2, and the other end of the resistor R7 is connected with the pin 57 of the main control chip U2;

pins

1, 3, 5, 6 and 9 of the 10-pin drive download interface XP2 are sequentially connected corresponding to

pins

57, 55, 56, 20 and 54 of the main control chip U2, pins 4 of the 10-pin drive download interface XP2 are connected with pins 7 and respectively connected with pins 10 and ground of the 10-pin drive download interface XP2 through a capacitor C14, and pins 2 of the 10-pin drive download interface XP2 are grounded; the 13 pins of the main control chip U2 are connected with a strip line interface 4 pin MISO of the debugging tool, the 12 pins are connected with a strip line interface 5 pin MOSI of the debugging tool, the 11 pins are connected with a strip line interface 6 pin SCK of the debugging tool, the 10 pins are connected with a strip line interface 7 pin SS of the debugging tool, and the 7 pins are connected with a strip line interface 8 pin Trig of the debugging tool; the active 7.3728M crystal oscillator XT1 model is: 7W-7.3728MBB; the type of the main control chip U2 is as follows: ATmega128L.

A debugging method of a debugging system of a miniature numerical control electrically tunable filter comprises the following steps: firstly, a miniature numerical control electrically tunable filter is installed in a debugging tool miniature numerical control electrically tunable filter installation interface of a lower computer and is connected with a debugging platform through a strip line interface of the debugging tool; the USB-to-serial port cable I and the USB-to-serial port cable II are connected with the upper computer and the lower computer, the power supply is connected with the lower computer, the network cable is connected with the upper computer and the network analyzer, and the test cable is connected with the lower computer and the network analyzer; turning on a power supply, judging whether the miniature numerical control electrically tunable filter has a short circuit or a core device assembly error, if so, positioning and repairing the fault, and if not, entering the next step; thirdly, the upper computer sends a debugging instruction, the central frequency of a filtering channel of the miniature numerical control electrically tunable filter is adjusted to the lowest central frequency required by a product index book, the bandwidth, insertion loss, the squareness and the far-end inhibition index of the miniature numerical control electrically tunable filter at the frequency are manually debugged, and the next step is carried out;

fourthly, the upper computer sends frequency band checking preset data to complete data presetting of the miniature numerical control electrically tunable filter, the upper computer sends a frequency band covering checking instruction to the lower computer, a microcontroller of the lower computer converts the testing instruction into an SPI (serial peripheral interface) data format to realize communication with the miniature numerical control electrically tunable numerical control filter, the checking of bandwidth, insertion loss, rectangularity and far-end inhibition indexes at the starting point and the ending point of a frequency band covering frequency hopping channel is completed, and the next step is carried out; fifthly, after the frequency band coverage inspection is qualified, data of all frequency hopping channels of the miniature numerical control electrically tunable filter in a frequency band required by a product technical index book need to be collected, an upper computer sends a channel traversing instruction in the frequency band, and a network analyzer captures traversing channel data in real time and returns the traversing channel data to the upper computer to complete data collection; sixthly, the upper computer collects all the traversal data, and after the traversal data is combed, analyzed and compared, digital codes corresponding to frequency hopping channels meeting the requirements of product technical indexes on center frequency, bandwidth, insertion loss, rectangularity and far-end inhibition are screened out and sent to the miniature numerical control electrically tunable filter to finish the solidification of the digital codes; seventhly, after the digital codes are solidified, the upper computer sends a test instruction to the lower computer, a microcontroller of the lower computer receives and analyzes the instruction, converts the instruction into an SPI communication data format and sends the SPI communication data format to the miniature numerical control electrically tunable filter, and the network analyzer captures data of central frequency, bandwidth, insertion loss, rectangularity and far-end suppression in real time; eighthly, the upper computer collects the measurement data of the network analyzer, judges the data one by one according to the requirements of the technical index book on center frequency, bandwidth, insertion loss, rectangularity and far-end inhibition, enters environment general test after judging that the data meet the requirements of the technical index book, and returns to the second step for debugging if the data do not meet the requirements; ninth, the upper computer sends an environment test instruction to the lower computer, the microcontroller of the lower computer receives and analyzes the instruction, converts the instruction into an SPI communication data format and sends the SPI communication data format to the miniature numerical control electrically tunable filter to complete environment test, and the network analyzer captures data of center frequency, bandwidth, insertion loss, rectangularity and far-end inhibition in real time; the upper computer judges the collected data measured by the network analyzer one by one according to the requirements of the product index book stored in the upper computer on the central frequency, the bandwidth, the insertion loss, the rectangularity and the far-end suppression under the environment, the debugging of the miniature numerical control electrically tunable filter is completed after the judgment that the data meet the requirements of the technical index book, and the debugging is returned to the second step if the data do not meet the requirements.

And in the second step, the method for judging whether the miniature numerical control electrically tunable filter has a short circuit or a core device assembly error comprises the following steps of reading the readings of the ammeter A1 and the ammeter A2, judging whether the miniature numerical control electrically tunable filter has the short circuit or the core device assembly error, and if the miniature numerical control electrically tunable filter has a fault, positioning the fault and repairing the fault by observing the specific readings of the ammeter A1 and the ammeter A2.

The third step is that the upper computer sends a frequency hopping command from low to high through a USB-to-serial port cable I, a debugging worker monitors the central frequency of the product through a network analyzer in the sending process, and the sending is stopped when the network analyzer captures the lowest central frequency required by the product index book; the method for manually debugging the starting point index of the miniature numerical control electrically tunable filter is characterized in that a debugging person monitors data of product bandwidth, insertion loss, rectangularity and far-end inhibition through a network analyzer in the process of adjusting the tightness and position of a coil on the miniature numerical control electrically tunable filter by using non-inductive tweezers until the requirement of a technical index book is met.

And fourthly, the upper computer sends preset data of frequency band inspection, wherein the preset data refers to digital codes corresponding to the starting point and the end point of the frequency band of the frequency hopping channel, which are calculated theoretically through simulation of an analog part and analysis of a digital control part of the comprehensive miniature numerical control electrically tunable filter.

The beneficial effects of the invention are: the invention greatly improves the defects of low efficiency and easy error of single code sending selection frequency hopping channels, one-by-one recording, analysis and channel performance evaluation in the existing debugging scheme; in the initial tuning stage, the performance of the whole frequency band can be accurately evaluated according to the requirements of a product technology index book prestored by an upper computer on center frequency, bandwidth, insertion loss, squareness and far-end inhibition, and useless work in the fine tuning stage is avoided; in the fine adjustment stage, the upper computer collects and analyzes data of all channels to select digital codes meeting the requirements of the technical index specification; the normal temperature and environment tests are executed by the host computer and automatically stored, the debugging and testing of the ultrashort wave full-frequency band product is completed for about 30 minutes, and the work efficiency is greatly improved compared with manual debugging and testing for about 10 hours.

In the invention, large batch data is processed by the upper computer in the initial and fine adjustment stages, so that the error problem caused by fatigue during manual recording, analysis and processing of large batch debugging data is solved, and the quality of debugging and measurement of the miniature numerical control electrically tunable filter is controlled by the upper computer, so that the first pass rate and the performance quality of batch products are ensured; through research and development and batch manufacturing inspection, the system is stable and reliable, and the product performance quality is high. The invention ensures that most of control actions required to be carried out on the miniature numerical control electrically tunable filter in the debugging process are completed in the program control interface of the upper computer, avoids repeatedly inputting debugging commands, frequently setting instruments and frequently using debugging tools to contact the regulated miniature numerical control electrically tunable filter, and reduces the equipment loss and the probability of damage to the regulated miniature numerical control electrically tunable filter caused by manual misoperation in the debugging process. The invention greatly reduces the workload of manual debugging of batch products and releases the productivity.

Drawings

FIG. 1 is a schematic block diagram of the connection of the present invention;

FIG. 2 is a schematic block diagram of the connection of the lower computer of the present invention;

FIG. 3 is a circuit diagram of the lower computer serial port level conversion I of the present invention;

fig. 4 is a circuit diagram of the secondary power supply of the lower computer of the present invention;

FIG. 5 is a circuit diagram of the lower computer serial port level shift II of the present invention;

FIG. 6 is a circuit diagram of the lower computer microcontroller portion of the present invention;

fig. 7 is a circuit diagram of the lower computer debugging tool strip line interface pin definition according to the present invention;

fig. 8 is a pin definition diagram of the miniature digitally controlled electrically tunable filter according to the present invention.

Detailed Description

The following detailed description of the invention, while not limiting the invention, will be given in conjunction with the accompanying drawings

Limiting, by way of example only. Meanwhile, the advantages of the present invention will become clearer and more easily understood through the description.

As shown in fig. 1, a debugging system of a miniature numerical control electrically tunable filter comprises a power supply, an upper computer, a lower computer and a network analyzer; the power supply is an AC/DC power supply and provides input for a secondary power supply of the lower computer; the upper computer is connected with the to-be-debugged micro numerical control electrically tunable filter in the installation interface of the lower computer debugging tool micro numerical control electrically tunable filter through a USB serial port line I and a serial port level conversion I to complete the debugging work of the to-be-debugged micro numerical control electrically tunable filter; the upper computer is connected with the lower computer through a USB (universal serial bus) port line 2, sends a debugging instruction to the lower computer, analyzes the data returned by the lower computer, and stores a test result; the upper computer is connected with the network analyzer through a network cable, and the network analyzer is arranged and analyzes the captured data to carry out closed-loop debugging; the network analyzer is connected with a lower computer through a test cable to monitor the indexes of the micro numerical control electrically tunable filter to be tested in real time.

As shown in fig. 2, the lower computer is the core content of the present invention, and the Vcc and Vbb output by the secondary power supply can ensure the normal power supply of the lower computer and the micro digitally controlled electrically tunable filter to be tuned; under the condition of normal power supply, the serial port level conversion I receives debugging information of an upper computer and converts the debugging information into an instruction which can be identified by a product to be tested, debugging of starting points, tail point bandwidths, insertion loss, rectangularity and far-end inhibition indexes of a frequency hopping channel in a primary debugging stage of the product is completed, and digital codes of the product are screened and solidified into the interior of the micro numerical control electrically tunable filter to be tested in a fine debugging stage; the serial port level conversion II receives a test instruction of the upper computer, the microcontroller converts the test instruction into an SPI data format to realize communication with the miniature numerical control electrically-tunable numerical control filter, analysis and execution of various test instructions of the upper computer are completed, and the serial port level conversion II also transmits a feedback instruction generated by the microcontroller back to the upper computer for closed-loop debugging.

As shown in fig. 3, the serial port level conversion i in the lower computer is a bridge through which the upper computer and the micro digitally controlled electrically tunable filter to be tested can communicate with each other, and converts the level value of the debugging instruction sent by the upper computer, so that the level amplitude value can be accepted by the micro digitally controlled electrically tunable filter to be tested, and the debugging work of the micro digitally controlled electrically tunable filter to be tested is completed.

As shown in fig. 4, the secondary power supply in the lower computer adopts a DC/DC isolation power supply, the input range is 18-36V, the output Vcc is 3.3V, and the Vbb is 22V; a common mode suppression circuit consisting of a capacitor C1, an inductor L1 and a capacitor C2 is placed at the input anode, a differential mode suppression circuit consisting of an inductor L2 and a capacitor C3 is placed at the output anode Vout1, a differential mode suppression circuit consisting of a capacitor C4, an inductor L3 and a capacitor C5 is placed at the output anode Vout2, and a differential mode suppression circuit consisting of a capacitor C6, an inductor L4 and a capacitor C7 is placed at the output anode Vout 2; a common mode and differential mode suppression circuit is placed at the input, and a DC/DC isolation power supply is adopted as a secondary power supply, so that the input interference caused by an external AC/DC power supply can be greatly filtered, the purity of the output power supplies Vout1 and Vout2 is ensured, and the interference caused by an external power supply to the regulated micro numerical control electrically tunable filter is solved; the differential mode suppression circuit is arranged at the output, so that the interference generated by the DC/DC isolation power supply U1 can be greatly filtered, the purity of the output power supplies Vbb and Vcc is ensured, and the interference brought to the micro numerical control electrically tunable filter to be tested by the isolation power supply U1 is eliminated.

As shown in fig. 5, the serial port level conversion ii in the lower computer is a bridge through which the upper computer and the microcontroller can communicate with each other, and converts the level value of the instruction sent by the upper computer, so that the level amplitude value can be received by the microcontroller, and the test work of the to-be-tested micro numerical control electrically tunable filter is completed.

As shown in fig. 6, the microcontroller may receive the test instruction after the serial port level conversion ii, convert the test instruction into an SPI data format to implement communication with the micro digitally controlled electrically tunable filter, and complete the checking work of the frequency band of the initial tuning stage that the tuned micro digitally controlled electrically tunable filter covers the starting point, the end point bandwidth, the insertion loss, the squareness, and the far-end suppression index of the frequency hopping channel; and testing the bandwidth, insertion loss, rectangularity and far-end inhibition indexes of the tested miniature numerical control electrically tunable filter at normal temperature and in the environment.

As shown in fig. 7, the adjusting and measuring tool is provided with a strip line interface and an installation position of the adjusted and measured micro numerical control electrically tunable filter,

the debugging frock is controlled by debugging miniature numerical control electricity accent wave filter through connecting the band wire, XP5 is the definition of band wire interface, secondary power supply's output Vbb is connected to 1 foot, secondary power supply's output Vcc is connected to two feet, 3 foot ground connection, 4 foot microcontroller U2's 13 feet, 5 foot microcontroller U2's 12 feet, 6 foot microcontroller U2's 11 feet, 7 foot microcontroller U2's 10 feet, 8 foot microcontroller U2's 7 feet, 9 foot connects miniature numerical control electricity accent wave filter and reserves the data receiving terminal of serial ports debugging interface, 10 foot connects miniature numerical control electricity accent wave filter and reserves the data transmitting terminal of serial ports debugging interface.

As shown in fig. 8, the miniature digitally controlled electrically tunable filter is mainly used for military handheld radio stations, and is one of the main anti-interference means in military communication. The central frequency and the bandwidth of a frequency hopping channel of the miniature numerical control electrically tunable filter determine the voice quality of a military handheld radio station to a certain extent, the insertion loss determines the length of a communication distance to a certain extent, and the squareness and the far-end suppression determine the strength of the anti-interference capability.

A debugging method of a debugging system of a miniature numerical control electrically tunable filter comprises the following steps: the first step, the miniature numerical control electrically tunable filter is installed in a miniature numerical control electrically tunable filter installation interface of a debugging tool of a lower computer, 1 pin of a debugging tool strip line interface is connected with 3 pins of the miniature numerical control electrically tunable filter, 2 pins are connected with 2 pins of the miniature numerical control electrically tunable filter, 3 pins are connected with 6 pins of the miniature numerical control electrically tunable filter, 4 pins are connected with 19 pins of the miniature numerical control electrically tunable filter, 5 pins are connected with 17 pins of the miniature numerical control electrically tunable filter, 6 pins are connected with 20 pins of the miniature numerical control electrically tunable filter, 7 pins are connected with 18 pins of the miniature numerical control electrically tunable filter, 8 pins are connected with 5 pins of the miniature numerical control electrically tunable filter, 9 pins are connected with 22 pins of the miniature numerical control electrically tunable filter, 10 pins are connected with 21 pins of the miniature numerical control electrically tunable filter, a USB serial port cable I and a USB serial port cable II are connected with an upper computer and a lower computer, a power supply is connected with the lower computer, a network analyzer is connected with a network cable, and a test cable is connected with the lower computer and the network analyzer. And secondly, turning on a power supply, reading readings of an ammeter A1 and an ammeter A2, judging whether the miniature numerical control electrically tunable filter has a short circuit or a core device assembly error, if so, positioning and repairing the fault by observing specific readings of the ammeter A1 and the ammeter A2, and if not, entering the next step. Taking the frequency range of 30-90 MHz for debugging as an example, carrying out debugging setting operation on a program control interface of an upper computer, calling out a required debugging file in the network analyzer by the upper computer through a network analyzer driver, carrying out selection operation on the frequency range of 30-90 MHz in a debugging area, sending a debugging instruction, sending a frequency hopping instruction from low to high to the micro numerically controlled electrically tunable filter to be debugged by the upper computer through a USB (universal serial bus) to serial port cable I, monitoring the central frequency of a product by a debugging person through the network analyzer in the sending process, and stopping sending when the frequency near 30MHz required by the index book of the product is captured by the network analyzer; and monitoring data of product bandwidth, insertion loss, rectangularity and far-end inhibition by a network analyzer in the process of adjusting the tightness and position of a coil on the miniature numerical control electrically tunable filter by using noninductive tweezers by a debugging worker until the requirement of a product technical index book is met, and entering the next step. Fourthly, simulating an analog part and analyzing a digital control part of the integrated micro numerical control electrically tunable filter, theoretically calculating that the digital code of the frequency band starting point of the frequency hopping channel of the product is 0x0084, and the digital code corresponding to the end point is 0x0DC1, sending the digital codes of the frequency band starting point and the end point to the micro numerical control electrically tunable filter to be tested through a USB to serial port cable I by an upper computer to complete data presetting of the micro numerical control electrically tunable filter, selecting the starting point by a debugging worker to perform starting point index check, sending a frequency band starting point check instruction to a lower computer through a USB to serial port cable II by the upper computer, converting the test instruction into an SPI data format by a microcontroller of the lower computer to realize communication with the micro numerical control electrically tunable filter, completing frequency band starting point frequency, bandwidth, insertion loss, squareness and far-end inhibition check, wherein the central frequency of the frequency band starting point is less than 30MHz, and other indexes meet the requirements of technical index specifications; and selecting the destination to perform destination inspection, sending a frequency band destination inspection instruction to the lower computer by the upper computer through a USB-to-serial port cable II, converting the test instruction into an SPI data format by a microcontroller of the lower computer to realize communication with the miniature numerical control electrically tunable filter, finishing frequency band destination frequency, bandwidth, insertion loss, rectangularity and far-end inhibition inspection, finishing frequency band coverage inspection when the central frequency of the frequency band destination is greater than 90MHz and other indexes meet the requirements of technical index specifications, and entering the next step. And fifthly, after the frequency band coverage inspection is qualified, data of all frequency hopping channels of the miniature numerical control electrically tunable filter in the frequency band required by the product technical index book are required to be collected, the host computer sends low-to-high frequency hopping instructions to the miniature numerical control electrically tunable filter to be tested through a USB (universal serial bus) to serial port cable I, sends traversing instructions of the frequency hopping channels in the frequency band of 30-90 MHz, and the network analyzer captures the data of the traversed channels of the miniature numerical control electrically tunable filter in real time and returns the data to the host computer to complete data collection. And sixthly, the upper computer collects all the traversal data, screens out the digital codes corresponding to the frequency hopping channels meeting the requirements of the technical index book of the product on center frequency, bandwidth, insertion loss, rectangularity and far-end inhibition through combing, analyzing and comparing, and sends the digital codes to the miniature numerical control electrically tunable filter through the USB-to-serial port cable I to complete the solidification of the digital codes. And seventhly, after the digital codes are solidified, the upper computer sends a test instruction to the lower computer through a USB-to-serial port cable II, the microcontroller of the lower computer receives and analyzes the instruction and then converts the test instruction into an SPI data format to realize communication with the miniature numerical control electrically tunable filter, the test operation is completed, and the network analyzer captures data of the central frequency, the bandwidth, the insertion loss, the rectangular degree and the far-end suppression of the regulated miniature numerical control electrically tunable filter in real time through the test cable. And step eight, collecting the captured data of the network analyzer by the upper computer through the network cable, judging one by one according to the requirements of the technical index book on center frequency, bandwidth, insertion loss, rectangularity and far-end inhibition, entering environment total test after judging that the requirements of the technical index book are met, and returning to the third step to debug again if the requirements are not met. Ninth, the upper computer sends an environment test instruction to the lower computer through a USB-to-serial port cable II, after receiving and analyzing the instruction, a microcontroller of the lower computer converts the test instruction into an SPI data format to realize communication with the miniature numerical control electrically tunable filter, environment test operation is completed, and the network analyzer captures data of center frequency, bandwidth, insertion loss, rectangularity and far-end suppression in real time through the test cable; and the upper computer judges the collected network analyzer measurement data one by one according to the requirements of the product index book stored in the upper computer on the central frequency, the bandwidth, the insertion loss, the squareness and the far-end inhibition under the environment, the environmental test of the miniature numerical control electrically tunable filter is completed after the judgment that the collected network analyzer measurement data meet the technical index book requirements, and the third step of debugging is returned if the collected network analyzer measurement data do not meet the requirements.

Claims

1. The utility model provides a debugging system of miniature numerical control electrically tunable filter, includes miniature numerical control electrically tunable filter, its characterized in that: the debugging system comprises a power supply, an upper computer, a lower computer and a network analyzer; the upper computer is connected with a miniature numerical control electric adjusting filter arranged on the adjusting tool through an adjusting platform in the lower computer, one path of the network analyzer is connected with the upper computer, the other path of the network analyzer is connected with the miniature numerical control electric adjusting filter on the adjusting tool, and the power supply is connected with a secondary power supply in the lower computer; the upper computer is pre-installed with a program control interface and a network analyzer driver, sends a debugging instruction to the lower computer through the program control interface, receives and analyzes the instruction returned by the lower computer and completes corresponding instruction action, completes the setting and calling of the network analyzer through the network analyzer driver, captures and analyzes debugging data, and saves a debugging result; the debugging platform in the lower computer is used for analyzing various control instructions sent by the upper computer and sending the control instructions to the miniature numerical control electrically tunable filter through the debugging tool; the network analyzer is used for capturing data of the miniature numerical control electrically tunable filter and providing the data to the upper computer.

2. The debugging system of the miniature numerical control electrically tunable filter according to claim 1, wherein: the lower computer comprises a regulating and measuring platform, an ammeter A1, an ammeter A2 and a regulating and measuring tool; the debugging platform comprises a secondary power supply, a serial port level conversion I, a serial port level conversion II and a microcontroller; the secondary power supply is respectively connected with a serial port level conversion I, a serial port level conversion II and a microcontroller, vbb of the secondary power supply is connected with a pin 1 of a strip line interface of a regulating and testing tool through an ammeter A1, vcc is connected with a pin 2 of the strip line interface of the regulating and testing tool through an ammeter A2, the serial port level conversion II is connected with pins 4, 5, 6 and 7 of the strip line interface of the regulating and testing tool through the microcontroller, the serial port level conversion I is connected with pins 9 and 10 of the strip line interface of the regulating and testing tool, the microcontroller is connected with pins 3 and 8 of the strip line interface of the regulating and testing tool, and the regulating and testing tool further comprises a miniature numerical control electrically tunable filter mounting interface and a test cable interface; the serial port level conversion I is used for the serial port communication between the host computer and the miniature numerical control electrically tunable filter installed on the debugging tool to complete the debugging work of the miniature numerical control electrically tunable filter;

the serial port level conversion II is used for the serial port communication between the upper computer and the microcontroller; the microcontroller receives and analyzes the test instruction sent by the upper computer through the serial port level conversion II, converts the test instruction into an SPI data format to realize communication with the miniature numerical control electric regulation numerical control filter and realize test control on the miniature numerical control electric regulation filter; the secondary power supply Vcc is used for supplying power to the serial port level conversion I, the serial port level conversion II, the microcontroller and the low-voltage part of the miniature numerical control electrically tunable filter installed on the debugging tool, and the secondary power supply Vbb is used for supplying power to the offset part of the miniature numerical control electrically tunable filter installed on the debugging tool; the ammeter A1 and the ammeter A2 are used for monitoring the low-voltage power consumption and the bias power consumption of the miniature numerical control electrically tunable filter mounted on the debugging and testing tool in real time; the miniature numerical control electrically tunable filter installation interface of the debugging tool is used for installing the debugged miniature numerical control electrically tunable filter, and the test cable interface is used for connecting a network analyzer.

3. The debugging system of the miniature numerical control electrically tunable filter according to claim 2, wherein: the serial port level conversion I takes a main control chip U4 as a core, a pin 1 of the main control chip U4 is connected with a pin 3 of the main control chip U4 through a capacitor C23, a pin 2 is grounded through a capacitor C22, a pin 4 is connected with a pin 5 through a capacitor C24, a pin 6 is grounded through a capacitor C25, a pin 11 is connected with a pin 10 of a debugging tool strip wire interface XP5, a pin 12 is connected with a pin 9 of the debugging tool strip wire interface XP5, a pin 13 is connected with a pin 3 of a serial port XP4 through a resistor R11, a pin 14 is connected with a pin 4 of the serial port XP4 through a resistor R10, a pin 15 is grounded, a pin 16 is grounded through a capacitor C26 and a capacitor C27, and a pin 1 of the serial port XP4 is grounded; the model of the main control chip U4 is MAX3232.

4. The debugging system of the miniature numerical control electrically tunable filter according to claim 2, wherein: the input anode of the secondary power supply is connected with a single-pole double-throw switch S1 in series and is respectively connected with one end of a capacitor C1 and a pin 1 of a common mode suppressor L1, the input cathode of the secondary power supply is connected with a pin 3 of the common mode suppressor L1 and the other end of the capacitor C1 and then is grounded, a pin 2 of the common mode suppressor L1 is respectively connected with one end of a capacitor C2 and one end of an inductor L2, the other end of the inductor L2 is respectively connected with one end of a capacitor C3 and an input anode + Vin of a DC/DC module U1, a pin 4 of the common mode suppressor L1 is connected with the capacitor C2, the other end of the capacitor C3 and the input cathode GND of the DC/DC module U1, the output anode Vout1 of the DC/DC module U1 is respectively connected with one end of the inductor L3 and one end of the capacitor C4, the other end of the inductor L3 is connected with one end of a capacitor C5 and serves as an output cathode Vcc, the other ends of the capacitor C4 and the capacitor C5 are connected with the output cathode GND of the DC/DC module U1 and then are grounded, the output anode Vout2 of the capacitor L4 and the other end of the capacitor C7 is connected with one end of the capacitor C6 and the output cathode COM of the capacitor C7 and the capacitor C6.

5. The debugging system of the miniature numerical control electrically tunable filter according to claim 4, wherein:

6. The debugging system of the miniature numerical control electrically tunable filter according to claim 2, wherein: the serial port level conversion II takes a main control chip U3 as a core, an XP3 as a serial port socket, a pin 1 of the main control chip U3 is connected with a pin 3 through a capacitor C17, a pin 2 is grounded through a capacitor C16, a pin 4 is connected with a pin 5 through a capacitor C18, a pin 6 is grounded through a capacitor C19, a pin 11 is connected with a pin 3 of a microcontroller U2, a pin 12 is connected with a pin 2 of the microcontroller U2, a pin 13 is connected with a pin 3 of the serial port socket XP3 through R9, a pin 14 is connected with a pin 4 of the serial port socket XP3 through R8, a pin 15 is grounded, a pin 16 is grounded through a capacitor C20 and a capacitor C21, and a pin 1 of the serial port socket XP3 is grounded; the model of the main control chip U3 is MAX3232.

7. The debugging system of a miniature numerical control electrically tunable filter according to claim 2, wherein: the microcontroller comprises a main control chip U2, an active 7.3728M crystal oscillator XT1 and a 10-pin drive download interface XP2; the pin 1 of the main control chip U2 is connected with a power supply Vcc through a resistor R1, one path of a pin 20 of the main control chip U2 is connected with the cathode of a diode D2 and the power supply Vcc through a resistor R2, the other path of the pin is connected with one end of a capacitor C11 and the ground through a switch S2, the other end of the capacitor C11 is connected with the anode of the diode D2, a pin 24 of the main control chip U2 is connected with a pin 3 of an active 7.3728M crystal oscillator XT1, a pin 2 of the active 7.3728M crystal oscillator XT1 is grounded, and a pin 4 is grounded through a capacitor C15; a pin 64 of the main control chip U2 is respectively connected with one end of a capacitor C9 and one end of an inductor L5, the other end of the inductor L5 is connected with the other end of the capacitor C9, one end of a capacitor C10, a pin 63 of the main control chip N1 and the ground through a capacitor C8, and the other end of the capacitor C10 is connected with a pin 62 of the main control chip U2; the pins 21 and 52 of the main control chip U2 are respectively connected with one ends of a capacitor C12 and a capacitor C13, the other ends of the capacitor C12 and the capacitor C13 are connected with the pin 22 and the pin 53 of the main control chip N1, one end of a resistor R3 and the ground, the pin 33 of the main control chip N1 is connected with the other end of a resistor R3 through a diode D1, one ends of a resistor R4, a resistor R5, a resistor R6 and a resistor R7 are respectively connected with a power supply Vcc, the other end of the resistor R4 is connected with the pin 54 of the main control chip U2, the other end of the resistor R5 is connected with the pin 55 of the main control chip U2, the other end of the resistor R6 is connected with the pin 56 of the main control chip U2, and the other end of the resistor R7 is connected with the pin 57 of the main control chip U2; pins 1, 3, 5, 6 and 9 of the 10-pin drive download interface XP2 are sequentially connected corresponding to pins 57, 55, 56, 20 and 54 of the main control chip U2, pins 4 of the 10-pin drive download interface XP2 are connected with pins 7, and are respectively connected with pins 10 and ground of the 10-pin drive download interface XP2 through capacitors C14, and pins 2 of the 10-pin drive download interface XP2 are grounded; the 13 pins of the main control chip U2 are connected with a strip line interface 4 pin MISO of the debugging tool, the 12 pins are connected with a strip line interface 5 pin MOSI of the debugging tool, the 11 pins are connected with a strip line interface 6 pin SCK of the debugging tool, the 10 pins are connected with a strip line interface 7 pin SS of the debugging tool, and the 7 pins are connected with a strip line interface 8 pin Trig of the debugging tool; the model of the active 7.3728M crystal oscillator XT1 is: 7W-7.3728MBB; the type of the main control chip U2 is as follows: ATmega128L.

8. A debugging method using the debugging system of the miniature numerical control electrically tunable filter according to claim 1, characterized by comprising the following steps:

firstly, a miniature numerical control electrically tunable filter is installed in a debugging tool miniature numerical control electrically tunable filter installation interface of a lower computer and is connected with a debugging platform through a strip line interface of the debugging tool; the USB-to-serial port cable I and the USB-to-serial port cable II are connected with the upper computer and the lower computer, the power supply is connected with the lower computer, the network cable is connected with the upper computer and the network analyzer, and the test cable is connected with the lower computer and the network analyzer;

secondly, turning on a power supply, judging whether the miniature numerical control electrically tunable filter has a short circuit or a core device assembly error, if so, positioning and repairing the fault, and if not, entering the next step;

thirdly, the upper computer sends a debugging instruction, the central frequency of a filtering channel of the miniature numerical control electrically tunable filter is adjusted to the lowest central frequency required by a product index book, the bandwidth, insertion loss, the squareness and the far-end inhibition index of the miniature numerical control electrically tunable filter at the frequency are manually debugged, and the next step is carried out;

fourthly, the upper computer sends frequency band checking preset data to complete data presetting of the miniature numerical control electrically tunable filter, the upper computer sends a frequency band covering checking instruction to the lower computer, a microcontroller of the lower computer converts the testing instruction into an SPI (serial peripheral interface) data format to realize communication with the miniature numerical control electrically tunable numerical control filter, the checking of bandwidth, insertion loss, rectangularity and far-end inhibition indexes at the starting point and the ending point of a frequency band covering frequency hopping channel is completed, and the next step is carried out;

fifthly, after the frequency band coverage inspection is qualified, data of all frequency hopping channels of the miniature numerical control electrically tunable filter in a frequency band required by a product technical index book need to be collected, an upper computer sends a channel traversing instruction in the frequency band, and a network analyzer captures traversing channel data in real time and returns the traversing channel data to the upper computer to complete data collection;

sixthly, the upper computer collects all the traversal data, and after the traversal data is combed, analyzed and compared, digital codes corresponding to frequency hopping channels meeting the requirements of product technical indexes on center frequency, bandwidth, insertion loss, rectangularity and far-end inhibition are screened out and sent to the miniature numerical control electrically tunable filter to finish the solidification of the digital codes;

seventhly, after the digital codes are solidified, the upper computer sends a test instruction to the lower computer, a microcontroller of the lower computer receives and analyzes the instruction, converts the instruction into an SPI communication data format and sends the SPI communication data format to the miniature numerical control electrically tunable filter, and the network analyzer captures data of central frequency, bandwidth, insertion loss, rectangularity and far-end suppression in real time;

eighthly, the upper computer collects the measurement data of the network analyzer, judges the data one by one according to the requirements of the technical index book on center frequency, bandwidth, insertion loss, rectangularity and far-end inhibition, enters environment general test after judging that the data meet the requirements of the technical index book, and returns to the second step for debugging if the data do not meet the requirements;

ninth, the upper computer sends an environment test instruction to the lower computer, the microcontroller of the lower computer receives and analyzes the instruction, converts the instruction into an SPI communication data format and sends the SPI communication data format to the miniature numerical control electrically tunable filter to complete environment test, and the network analyzer captures data of center frequency, bandwidth, insertion loss, rectangularity and far-end inhibition in real time; the upper computer judges the collected network analyzer measurement data one by one according to the requirements of the product index book stored in the upper computer on the central frequency, the bandwidth, the insertion loss, the rectangularity and the far end inhibition under the environment, the regulation and the test of the miniature numerical control electric regulation filter are completed after the judgment that the collected network analyzer measurement data meet the technical index book requirements, and if the collected network analyzer measurement data do not meet the technical index book requirements, the debugging is returned to the second step for re-debugging.

9. The debugging method of the debugging system of the miniature numerical control electrically tunable filter according to claim 8, wherein: and the method for judging whether the miniature numerical control electrically tunable filter has a short circuit or a core device assembly error comprises the following steps of reading the readings of an ammeter A1 and an ammeter A2, judging whether the miniature numerical control electrically tunable filter has a short circuit or a core device assembly error, and positioning and repairing the fault by observing the specific readings of the ammeter A1 and the ammeter A2 if the fault exists.

10. The debugging method of the debugging system of the miniature numerical control electrically tunable filter according to claim 8, wherein: the third step is that the upper computer sends a frequency hopping instruction from low to high through a USB-to-serial port cable I, a debugging worker monitors the central frequency of the product through a network analyzer in the sending process, and the sending is stopped when the network analyzer captures the lowest central frequency required by the product index book; the method for manually debugging the starting point index of the miniature numerical control electrically tunable filter comprises the steps that a debugging worker monitors data of product bandwidth, insertion loss, rectangularity and far-end inhibition through a network analyzer in the process of adjusting the tightness and the position of a coil on the miniature numerical control electrically tunable filter by using non-inductive tweezers until the data meet the requirements of technical index specifications; and fourthly, the upper computer sends preset data of frequency band inspection, wherein the preset data refers to digital codes corresponding to the starting point and the end point of the frequency band of the frequency hopping channel, which are calculated theoretically through simulation of an analog part and analysis of a digital control part of the comprehensive miniature numerical control electrically tunable filter.