CN212905410U - Testing system for Takang navigation system - Google Patents
Testing system for Takang navigation system Download PDFInfo
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- CN212905410U CN212905410U CN202021136801.8U CN202021136801U CN212905410U CN 212905410 U CN212905410 U CN 212905410U CN 202021136801 U CN202021136801 U CN 202021136801U CN 212905410 U CN212905410 U CN 212905410U
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Abstract
The utility model relates to a test system of a Takang navigation system, which comprises a control unit which is responsible for the control and data exchange of each internal unit; the radio frequency signal simulation unit consists of a radio frequency signal receiving channel, a radio frequency signal transmitting channel and a baseband signal processing board and is used for completing navigation management response signal simulation, TACAN signal simulation, frequency test, sensitivity test and received power test; the system comprises a video vector analysis unit, a low-frequency signal adaptation unit and a signal processing unit, wherein the video vector analysis unit consists of a double-channel oscillography conditioning module and a signal processing module and is used for analyzing received video signals to obtain time domain information of input signals and processing signals needing vector analysis; and the communication module consisting of the bus communication board card and the bus back board card can perform performance tests on various aspects of the TACAN navigation system so as to ensure the normal work of the TACAN navigation system.
Description
Technical Field
The utility model relates to a takang test field, concretely relates to takang navigation system test system.
Background
"ta kang" is made up of ship carrier and airborne equipment: the onboard equipment includes radio transceivers, antennas, control and display devices, etc. The pilot can continuously obtain the distance and orientation of the aircraft relative to the ground platform from a distance measuring Device (DME) of the onboard system. Tacan is a polar radio air navigation system with a very high frequency (UHF) of 962 and 1213 mhz. Each interval of 1 MHz is divided into 126 discrete frequency channels, and the shipboard equipment and the airborne equipment adopt different transmitting frequencies. The aircraft sends out an inquiry signal to the naval vessel beacon to obtain the distance between the aircraft and the naval vessel through calculation after the reply is obtained; and acquiring the accurate position of the aircraft relative to the naval vessel by detecting the radio waveform emitted by the naval vessel beacon. In order to ensure the normal work of tacan, it is very important to test tacan, most of the current test modes adopt independent detection of each device and manual experience for detection, and a unified detection standard and a system are lacked.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a TACAN navigation system test system, can carry out the capability test of each side to TACAN navigation system to ensure its normal work.
The purpose of the utility model is realized through the following technical scheme:
a test system for a tacan navigation system, the test system comprising:
the control unit is responsible for controlling and exchanging data of each internal unit;
the radio frequency signal simulation unit consists of a radio frequency signal receiving channel, a radio frequency signal transmitting channel and a baseband signal processing board and is used for completing navigation management response signal simulation, TACAN signal simulation, frequency test, sensitivity test and received power test;
the video vector analysis unit consists of a double-channel oscillography conditioning module and a signal processing module and is used for analyzing the received video signals to obtain time domain information of the input signals and processing the signals needing vector analysis;
the responder simulation test card, the Takang simulation test card and the indicator simulation test card form a low-frequency signal adapting unit for conditioning, matching and switching signals;
and the communication module is composed of a bus communication board card and a bus back board card.
Further, the radio frequency signal receiving channel comprises a numerical control digital attenuator, a filter and a down converter which are sequentially connected with the empty pipe transponder transceiver or the TACAN onboard equipment, the down converter outputs three paths of intermediate frequency signals, one path of intermediate frequency signals is used for power detection, the other path of intermediate frequency signals is connected with the ADC module and used for oscilloscope display function, and the last path of intermediate frequency signals is transmitted to the baseband signal processing board.
Furthermore, the radio frequency signal transmitting channel comprises a frequency synthesizer, a modem, a 100dB numerical control attenuator and an antenna which are sequentially connected with the baseband signal processing board.
Furthermore, the frequency synthesizer is composed of a frequency source, a phase accumulator, a waveform memory, a digital-to-analog converter and a low-pass filter, wherein the phase accumulator, the waveform memory, the digital-to-analog converter and the low-pass filter are sequentially connected in series, and the frequency source is connected in parallel between the input end of the phase accumulator and the output end of the waveform memory.
Furthermore, the baseband signal processing board comprises a microprocessor, an FPGA module, a keyboard, a display unit and a microwave power module consisting of an envelope modulator, a switch modulator and a numerical control attenuator, wherein the microprocessor and the FPGA module are respectively connected with the microwave power module and are used for realizing AM modulation and switch modulation.
Further, the microprocessor completes data receiving and sending through RS485 and RS 422.
Furthermore, the test system also comprises a power supply and temperature control unit, wherein the power supply and temperature control unit comprises an AC-DC module, a filter, a DC-DC module, a temperature sensor, a heating device and a heat dissipation device;
the AC-DC module and the filter are respectively used for inputting an alternating current power supply and a direct current power supply, the output ends of the AC-DC module and the filter are connected to the DC-DC module, and the DC-DC module is connected with the control unit;
the temperature sensor, the heating device and the heat dissipation device are respectively connected with the control unit, and the temperature sensor is distributed in different areas of the detection host.
Furthermore, the heating device adopts a resistance heating circuit, and the heat dissipation device is an air cooling device or a liquid cooling device.
The utility model has the advantages that:
(1) the main performance test of the YDK-1A airborne empty pipe responder and the control box in the internal field can be completed;
(2) the main performance test of the YDK-1B airborne empty pipe responder and the control box in the internal field can be completed;
(3) the main performance test of the internal field to the JD-3A/3P TACAN transceiver, the control box and the comprehensive display can be completed;
(4) the test items are set to meet the maintenance requirements;
(5) the operation of the detection equipment is simple to operate and highly humanized;
(6) the integration level is high, the functions are comprehensive, and the number of matched instruments is small;
(7) the current mature technology is adopted, and standard devices are selected, so that the device is safe and reliable, and is convenient to use and maintain.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a functional block diagram of a radio frequency signal simulation unit;
FIG. 3 is a DDS basic schematic block diagram;
FIG. 4 is a functional block diagram of a baseband signal processing board;
FIG. 5 is a block diagram of the operation of the low frequency signal adaptation unit
FIG. 6 is a RS422 to TTL communication circuit;
FIG. 7 is a block diagram of a dual channel oscilloscope signal conditioning module;
FIG. 8 is a functional block diagram of an intermediate frequency processing circuit;
FIG. 9 is a schematic block diagram of a power supply and temperature control unit.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1, a test system for a tacan navigation system includes:
the control unit is responsible for controlling and exchanging data of each internal unit;
the radio frequency signal simulation unit consists of a radio frequency signal receiving channel, a radio frequency signal transmitting channel and a baseband signal processing board and is used for completing navigation management response signal simulation, TACAN signal simulation, frequency test, sensitivity test and received power test;
the video vector analysis unit consists of a double-channel oscillography conditioning module and a signal processing module and is used for analyzing the received video signals to obtain time domain information of the input signals and processing the signals needing vector analysis;
a low-frequency signal adapting unit is formed by the responder simulation test card, the tacan simulation test card and the indicator simulation test card and is used for conditioning, matching and switching signals, and the principle of the low-frequency signal adapting unit can be shown in fig. 5;
and the communication module is composed of a bus communication board card and a bus back board card.
A control unit: the control unit is a hardware core of the whole device, issues a test task according to a test requirement, is responsible for control and data exchange of each internal unit, transmits the test task to each test unit through a bus, completes functions of signal simulation, signal detection and the like, completes test conclusion judgment through test data and forms a test report. Each functional unit is designed comprehensively according to the test requirements of the function and performance indexes, and each unit can independently complete the corresponding function. The control unit is a core control device, is a set of digital multifunctional internal field detection control system platform taking an integrated industrial personal computer as a control center, and selects a TPC-084-N2800-6COM fanless series industrial tablet computer.
The TPC-084-N2800-6COM fan-free series industrial tablet computer is a strong economical touch industrial tablet computer designed for industrial control, machine equipment, a ship control system, online monitoring of a tower crane, production assembly line management, medical equipment, video acquisition, LED large screen control, multimedia playing and vehicle-mounted instruments, POS and the like. The computer is mainly used for industrial tablet computers with high CPU speed requirements, compact structures, low space requirements, low economy and low applicable prices.
The radio frequency signal analog unit: the radio frequency signal simulation unit is a core function unit of the tester and mainly completes navigation management response signal simulation, Takang signal simulation, frequency test, sensitivity test, received power test and the like.
A video vector analysis unit: the video vector analysis unit analyzes the received video signal to obtain the time domain information of the input signal and processes the signal needing vector analysis.
A low-frequency signal adaptation unit: the low-frequency signal adapting unit is used for completing the YDK-1A airborne empty pipe responder and the control box, and the YDK-1B airborne empty pipe responder and the control box; JD-3A/3P TACAN transceiver, control box and integrated display.
The communication module adopts a bus communication board card which is mainly used for an altimeter transceiver with a 1553B/RINC429 bus, completes the transceiving function of a 1553B/RINC429 bus communication protocol and is a 1553B/RINC429 bus protocol forwarding unit. The bus back board mainly completes the adaptation and the cross-linking of signals among the control unit, the power supply and temperature control unit and the power supplies of all the functional modules.
The power supply and temperature control unit is further included, and as shown in fig. 9, the power supply and temperature control unit includes an AC-DC module, a filter, a DC-DC module, a temperature sensor, a heating device, and a heat dissipation device; the AC-DC module and the filter are respectively used for inputting an alternating current power supply and a direct current power supply, the output ends of the AC-DC module and the filter are connected to the DC-DC module, the DC-DC module is connected with the control unit, the temperature sensor, the heating device and the heat dissipation device are respectively connected with the control unit, and the temperature sensor is distributed in different areas of the detection host machine. The heating device adopts a resistance heating circuit, and the heat dissipation device is an air cooling device or a liquid cooling device.
Realize power conversion and temperature monitoring, the input power supply of adaptation includes: 220V/50Hz three-phase alternating current, 115V/400Hz single-phase double-wire system alternating current and 27V direct current. The DC-DC module outputs a plurality of paths of controllable direct current power supplies as secondary power supplies for the modules to work. The temperature control unit is provided with a temperature sensor, the internal temperature of the equipment can be monitored in real time and reported to the control unit, when the temperature is detected to be too low, the heating unit is started to heat the system, and the whole system is controlled to be powered on until the temperature reaches a normal working temperature value; and when the temperature is detected to be overhigh, the heat dissipation unit is controlled to work to dissipate heat of the system.
The power supply and temperature control unit mainly completes the following functions:
converting an externally input alternating current power supply into a plurality of direct current power supplies used by a system;
the temperature sensor is used for acquiring the working environment temperature of the system, the heating device is controlled to heat the detection equipment when the environment temperature is lower than minus 10 ℃, the fan is started to dissipate heat when the environment temperature is higher than plus 30 ℃, and the rotating speed of the fan is adjusted according to the temperature value, so that the stable working of the system is ensured.
In addition, the system also comprises a necessary keyboard and a necessary mouse, wherein the keyboard and the necessary mouse are mainly used for completing the input and output control of signals, and the control unit sends corresponding operations and commands through the input and output switching of the keyboard and the mouse.
Referring to fig. 2, the radio frequency signal receiving channel includes a digital control digital attenuator, a filter and a down converter, which are sequentially connected to the transceiver of the empty pipe transponder or the tacan onboard device, and the down converter outputs three intermediate frequency signals, one of which is used for power detection, the other of which is connected to the ADC module and used as an oscilloscope display function, and the last of which is transmitted to the baseband signal processing board.
After the radio frequency signal receiving channel receives a signal sent by an empty pipe transponder transceiver or a TACAN airborne device through a radio frequency cable (or an antenna), the dynamic range of the signal is large, and controllable attenuation is carried out through a numerical control digital attenuator so as to ensure that the detection of the received signal is kept in a measurable and stable range. The frequency range of the signal is wide (962 MHz-1213 MHz), the signal enters a down converter after passing through a filter to output an intermediate frequency signal, and the intermediate frequency signal is conditioned and detected, and then the next step of processing is carried out.
The IF signal is output to be used as power detection, and the pulse or continuous wave power of a received signal is tested;
one output is subjected to frequency division by 8, and standard intermediate frequency signals are output by conditioning and shaping and provided to a baseband signal processing board;
one path is processed by the ADC, and then conditioning output is carried out to be used as the display function of the oscilloscope.
And the attenuator part receives the signals transmitted by the transmitter of the airborne equipment and leads the signals to a receiving channel through a radio frequency cable (or an antenna). Because the transmitted signal power is large, the input signal needs to be reduced by a fixed attenuator of 30dB/20W, and then the attenuation is carried out by a 30dB attenuator, so as to ensure that the received signal detection is kept in a stable measurable power range.
And the down-conversion part is used for mainly completing down-conversion of the radio frequency signals for the baseband signal processing board, and simultaneously coupling and outputting 1 path of radio frequency signals for testing. The frequency range of the signal is 962MHz to 1213MHz, and the signal is filtered by a filter to realize the filtering of the received signal. The radio frequency signal enters a down converter to output an intermediate frequency signal, and the input and output signals have the following main indexes:
the radio frequency input signal includes:
RF signal frequency: 962 MHz-1213 MHz;
RF signal power: -10dBm to 0 dBm;
the stray of the RF signal is less than or equal to-70 dBc;
the local oscillator signal includes:
FL signal frequency: 900 MHz;
FL signal power: 10 dBm;
the intermediate frequency output signal includes:
output signal frequency: 62 MHz-313 MHz;
signal path: 3-way (spectrum analysis, digital processing, power test);
baseband signal spurs: ≦ -55dBc (measured at-2 dBm);
signal harmonics: better than-53 dBc;
the intermediate frequency output signal has 3 channels, and 1 channel is used for power detection. And after the microprocessor obtains the power detection result, the power detection result is output through a 485 bus.
The frequency converter mainly has the function of reducing the frequency of the intermediate frequency signal, and the intermediate frequency signal is changed from 62 MHz-313 MHz to 7.75 MHz-39.125 MHz for FPGA processing.
In another aspect, the rf signal transmission path includes a frequency synthesizer, a modem, a 100dB digitally controlled attenuator, and an antenna sequentially connected to the baseband signal processing board.
The signal source obtains a carrier signal to be transmitted through modulation (including switch modulation and envelope modulation), and the frequency range of the signal is wider (962 MHz-1213 MHz). The envelope modulation function can be implemented directly by the baseband signal processing board, i.e. the TX signal contains the relevant information. Switching modulation is essential, especially for the modulated output of narrow pulse signals. And the carrier signal is output to a receiving end of an airborne air traffic control or TACAN equipment through an antenna or a cable after passing through modulation and a 100dB numerical control attenuator.
The frequency synthesis mainly adopts a broadband digital arbitrary wave and direct digital frequency synthesis technology to realize intermediate frequency baseband signal synthesis and digital control signal generation, and the digital baseband signal synthesis module completes the required radar digital baseband waveform synthesis by receiving radar signal data and control commands of a microprocessor ARM. The frequency conversion module mainly completes the functions of frequency shifting and frequency expanding of the intermediate frequency baseband signal and up-converts the intermediate frequency baseband signal to a required microwave frequency band. Direct digital frequency synthesis (DDS) uses a high speed memory look-up table to generate a waveform that has been stored in memory in digital form by a high speed digital-to-analog converter.
The modulation part comprises switch modulation and envelope modulation. The switch modulation selects HMC347ALP3, the device has the characteristics of wide use frequency, small insertion loss, high isolation, high switching speed and the like, the switch filtering selects an HMC321P4E single-pole eight-throw switch and an LFCN series low-pass filter of an LTCC process of MINI company, and a pad of an on-board LC filter is reserved for debugging and using. The switching modulation parameters are as follows:
3.3V switch on, 0V switch off, attenuation 0 dB;
modulation degree > 50;
the pulse width is 0.1-3000 uS;
rising/falling edge < 0.04 uS.
The envelope modulation selects RFSA2013 of Qorvo company, and the device has the characteristics of wide use frequency, analog voltage control, wide controlled attenuation range, good flatness and the like. The envelope modulation parameters are as follows:
at high level, the radio frequency output port has no attenuation, and the output attenuation is more than 50dB at low level;
modulation degree > 50;
the difference in voltage amplitude between high and low levels is > 2V.
The HMC624LP4E is selected as the numerical control attenuator, the device has the characteristics of wide frequency range, large attenuation range and the like, the maximum attenuation of a single chip can reach 31.5dB, two chips are connected in series to meet the attenuation requirement of 0-63 dB, four chips are connected in series to meet the attenuation requirement of 0-120 dB, and one chip is added for standby power calibration.
Output power dynamic range: not less than 90 dB;
step control of output power: 1 dB;
output power control accuracy: better than +/-1 dB;
power flatness:
better than ± 1dB (narrowband mode, 100 MHz);
better than + -2dB (broadband mode, 1 GHz).
Referring to fig. 3, the frequency synthesizer is composed of a frequency source, a phase accumulator, a waveform memory, a digital-to-analog converter, and a low pass filter, the phase accumulator, the waveform memory, the digital-to-analog converter, and the low pass filter are connected in series in sequence, and the frequency source is connected in parallel between an input end of the phase accumulator and an output end of the waveform memory.
Referring to fig. 4, the baseband signal processing board includes a microprocessor, an FPGA module, a keyboard, a display unit, and a microwave power module composed of an envelope modulator, a switch modulator, and a digital control attenuator, and the microprocessor and the FPGA module are respectively connected to the microwave power module for implementing AM modulation and switch modulation.
The baseband signal processing board mainly realizes the functions of low-frequency signal simulation and test through the FPGA, and specifically comprises the following components:
1) received signal processing
After receiving the intermediate frequency signal, the baseband signal processing board analyzes the intermediate frequency T0 signal through the FPGA;
measuring and analyzing parameters such as the pulse width of the intermediate frequency T0 signal through the FPGA, calculating the frequency of the intermediate frequency signal, and then obtaining the frequency of a received radio frequency signal;
decoding the intermediate frequency T0 signal through the FPGA to obtain an airplane code and a height code of the air traffic control transponder, and identifying the SPI;
decoding the intermediate frequency T0 signal through the FPGA to obtain the distance and other parameters of the TACAN airborne equipment;
2) transmission signal processing
Generating an A/C/S mode interrogation pulse signal and a side lobe suppression signal through an FPGA, and performing switch modulation on a carrier signal of 962 MHz-1213 MHz by the signals;
generating a TACAN air space and TACAN air ground inquiry pulse signal and a reply signal through an FPGA, and performing switch modulation on a carrier signal of 962 MHz-1213 MHz by the signal;
generating a Takan air-space and a Takan air-ground azimuth signal through the FPGA, and carrying out envelope modulation on a carrier signal of 962 MHz-1213 MHz by the signal;
and generating an RS485 communication signal with a radio frequency channel to complete frequency and channel switching, attenuation control and the like.
The FPGA adopts XC2V1000-FG256 chips of Xilinx company, the core work of signal processing is completed by the FPGA, and the FPGA is designed by VHDL hardware description language.
In the signal transmitting part, the FPGA can generate various radar signals according to related protocol algorithms.
After the signal is generated, part of the signal is sent to an AD chip to generate an analog waveform, and the analog waveform is combined with DK and DPSK signals to jointly form baseband and modulation signals.
The FPGA generates these modes of audio modulation signals through its 12-bit DA converter and adds a dc component to these signals to control the transmit power. The number of sampling points is calculated according to the highest frequency of the synthesized signal, the more sampling points are, the smaller the distortion degree of the waveform generated by DA is, but the speed of the FPGA is limited, so that the proper number of points are selected according to the frequency and the distortion requirement of the synthesized waveform.
Further, the microprocessor finishes data receiving and transmitting through RS485 and RS 422. As shown in fig. 6, the RS422 is converted to a TTL communication circuit. When data is input from outside, the first serial port of the microprocessor will generate interrupt, judge whether the received data is valid data, if so, analyze the command corresponding to the received data and execute the corresponding operation. When internal communication is generated, the second serial port of the microprocessor generates interruption, whether the communication is effective or not is judged, if the communication is effective, the received data is analyzed, corresponding operation is executed, and finally, a receiving response is sent back through 422.
The video vector analysis unit has the functions of analyzing the received video signals to obtain the time domain information of the input signals, and simultaneously processing the signals needing vector analysis to assist in completing the function and performance check of the task system. The main functions are as follows:
the vector signal analysis and oscilloscope functions are realized;
the bandwidth of the oscilloscope: DC-500 MHz;
measuring range grade: 50mVpp, 100mVpp, 200mVpp, 500mVpp, 1Vpp, 2Vpp, 5 Vpp;
sampling rate of the oscilloscope: 2.5GSa/s @14 bit;
storage depth: 8 GByte;
vector analyzer frequency range: 20MHz to 18 GHz;
vector signal analysis bandwidth: 80 MHz;
supporting Agilent 89600B VSA vector analysis software;
measurement mode: time domain, scalar, vector, digital demodulation, and gating measurements;
the whole system supports the analysis functions of a time domain, a frequency domain and a modulation domain;
the video vector analysis unit consists of a double-channel oscillography conditioning module and a signal processing module.
Two-channel oscilloscope signal conditioning module: and (3) carrying out increment, offset and trigger level conditioning and calibration on the signals with the bandwidth of DC-500 MHz, and outputting the signals with the bandwidth of DC-500 MHz for data acquisition of an ADC (analog to digital converter) dual-channel ADC (analog to digital converter) at the rear end.
The signal processing module: and the system supports a double-channel 2.5G sampling rate ADC (used for an oscilloscope function), a single-channel 250M sampling rate ADC (used for a spectrum analysis function and a vector analysis function), an FPGA (field programmable gate array) (receiving ADC and trigger signals, FFT (fast Fourier transform), broadband demodulation processing) and a DSP (parameter analysis and external interface).
The main controller of the TFR1400 infield integrated tester serves as the upper computer of the unit, and performs operation, monitoring, and data and graphical interface management thereon, and the principle of each main functional module is shown in fig. 7 and 8.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. A test system for a tacan navigation system, the test system comprising:
the control unit is responsible for controlling and exchanging data of each internal unit;
the radio frequency signal simulation unit consists of a radio frequency signal receiving channel, a radio frequency signal transmitting channel and a baseband signal processing board and is used for completing navigation management response signal simulation, TACAN signal simulation, frequency test, sensitivity test and received power test;
the video vector analysis unit consists of a double-channel oscillography conditioning module and a signal processing module and is used for analyzing the received video signals to obtain time domain information of the input signals and processing the signals needing vector analysis;
the responder simulation test card, the Takang simulation test card and the indicator simulation test card form a low-frequency signal adapting unit for conditioning, matching and switching signals;
and the communication module is composed of a bus communication board card and a bus back board card.
2. The test system of claim 1, wherein the radio frequency signal receiving channel comprises a digital control digital attenuator, a filter and a down converter which are sequentially connected with an air traffic control transponder transceiver or a tacan onboard device, the down converter outputs three intermediate frequency signals, one of which is used for power detection, the other of which is connected with the ADC module and used for oscilloscope display function, and the last of which is transmitted to the baseband signal processing board.
3. The ta kang navigation system test system of claim 2, wherein the radio frequency signal transmission channel comprises a frequency synthesizer, a modem, a 100dB digitally controlled attenuator and an antenna sequentially connected to the baseband signal processing board.
4. The ta kang navigation system test system of claim 3, wherein the frequency synthesizer consists of a frequency source, a phase accumulator, a waveform memory, a digital-to-analog converter, and a low pass filter, the phase accumulator, the waveform memory, the digital-to-analog converter, and the low pass filter are connected in series in sequence, and the frequency source is connected in parallel between an input end of the phase accumulator and an output end of the waveform memory.
5. The ta kang navigation system test system of claim 4, wherein the baseband signal processing board comprises a microprocessor, an FPGA module, a keyboard, a display unit, and a microwave power module consisting of an envelope modulator, a switch modulator, and a numerical control attenuator, and the microprocessor and the FPGA module are respectively connected with the microwave power module for realizing AM modulation and switch modulation.
6. The ta kang navigation system test system of claim 5, wherein the microprocessor completes data transceiving through RS485 and RS 422.
7. The test system according to claim 6, further comprising a power and temperature control unit, said power and temperature control unit comprising an AC-DC module, a filter, a DC-DC module, a temperature sensor, a heating device and a heat sink;
the AC-DC module and the filter are respectively used for inputting an alternating current power supply and a direct current power supply, the output ends of the AC-DC module and the filter are connected to the DC-DC module, and the DC-DC module is connected with the control unit;
the temperature sensor, the heating device and the heat dissipation device are respectively connected with the control unit, and the temperature sensor is distributed in different areas of the detection host.
8. The ta kang navigation system test system of claim 7, wherein the heating device is a resistance heating circuit, and the heat sink is an air cooling device or a liquid cooling device.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945879A (en) * | 2021-10-19 | 2022-01-18 | 四川九洲电器集团有限责任公司 | Method and system for detecting signal source of responder of air traffic warning system |
| CN115391923A (en) * | 2022-10-27 | 2022-11-25 | 成都众享天地网络科技有限公司 | Functional level simulation method for Takang system |
| CN117560030A (en) * | 2024-01-12 | 2024-02-13 | 成都世源频控技术股份有限公司 | Miniaturized low-cost quick frequency measurement circuit |
-
2020
- 2020-06-18 CN CN202021136801.8U patent/CN212905410U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945879A (en) * | 2021-10-19 | 2022-01-18 | 四川九洲电器集团有限责任公司 | Method and system for detecting signal source of responder of air traffic warning system |
| CN115391923A (en) * | 2022-10-27 | 2022-11-25 | 成都众享天地网络科技有限公司 | Functional level simulation method for Takang system |
| CN115391923B (en) * | 2022-10-27 | 2023-01-03 | 成都众享天地网络科技有限公司 | Functional level simulation method for Takang system |
| CN117560030A (en) * | 2024-01-12 | 2024-02-13 | 成都世源频控技术股份有限公司 | Miniaturized low-cost quick frequency measurement circuit |
| CN117560030B (en) * | 2024-01-12 | 2024-04-23 | 成都世源频控技术股份有限公司 | Miniaturized fast frequency measurement circuit |
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