CN109857048A - Digitize Fuel On Board TT&C system - Google Patents
Digitize Fuel On Board TT&C system Download PDFInfo
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- CN109857048A CN109857048A CN201711239212.5A CN201711239212A CN109857048A CN 109857048 A CN109857048 A CN 109857048A CN 201711239212 A CN201711239212 A CN 201711239212A CN 109857048 A CN109857048 A CN 109857048A
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Abstract
The invention discloses a kind of digitlization Fuel On Board TT&C systems, including sensor signal processing circuit, communication drive circuit, photoelectric isolating circuit and oil mass signal device, it is characterized by also including single-chip microcontroller STM32, the single-chip microcontroller STM32 electrical connection calculates fuel oil temperature for handling, oil mass, the sensor signal processing circuit of consumption and communication drive circuit for being communicated with host computer, the programmable logic device CPLD that the single-chip microcontroller STM32 connection controls input and output digital quantity, the programmable logic device CPLD expires signal by the zeroing tune that photoelectric isolating circuit connects transmission Fuel On Board, the oil mass signal device and transmission fuel oil pump control valve signal of the full signal of oil oil to the greatest extent.Due to the control framework combined based on STM32 with CPLD, using the principle of digital electric bridge measurement fuel oil, so small in size, exploitation is simple, and at low cost, peripheral interface enriches.
Description
Technical field
The present invention relates to fuel oil TT&C system more particularly to the digitlization Fuel On Board TT&C systems of aircraft.
Background technique
Fuel oil TT&C system is the subsystem of aircraft fuel system, its effect is to provide fuel level information and engine
Fuel consumption information, be one of basic function safeguards system of aircraft.Since navigation attitude variation causes in aircraft flight
Oil mass measurement error and fluctuate it is larger, it is high to the accuracy requirement of oil measurement；Especially the sensor of fuel oil TT&C system,
Cable, signalling means are all installed in inside fuel tank, and enter fuel tank safeguard it is extremely difficult, therefore, also very to non-maintaining requirement
It is high.By the development of over half a century, although the measurement accuracy of fuel oil TT&C system is being continuously improved, system reliability, maintenance
The performances such as property are being continuously improved, but the basic architecture of fuel measuring system is almost without any change, generally mainly by oil
Position measuring sensor, density measure sensor, fuel measurement and processing mission computer and oil mass such as shows at the part composition, substantially
The course of work are as follows: the fuel head in fuel tank, fuel measurement and processing task computation are measured by level measurement sensor first
Machine is using fuel head, flight attitude and is stored in the information such as internal fuel tank mathematical model, calculates corresponding fuel bulk,
The fuel density in conjunction with measured by density measure sensor obtains the contained fuel oil quality of fuel tank, fuel measurement and processing task meter
Fuel oil quality is transmitted to cockpit display system and flight management task system etc. by data/address bus by calculation machine.With Advanced Aircraft control
The needs of development and the fuel system digital management of technology processed, airborne digital fuel oil TT&C system become necessarily becoming for development
Gesture, currently, the control framework that airborne digital fuel oil TT&C system is mainly combined using DSP with FPGA, the framework
Measuring system chip price is more expensive, and simultaneity factor volume is larger；Since the algorithm comparison being related in terms of fuel measurement is simple, use
DSP seems some wastings of resources that CPU peripheral interface circuit is more complicated to carry out data processing, while DSP control system is outer
It is not abundant enough to enclose interface, the Function Extension of system relies primarily on FPGA to realize, the fpga chip door number selected in this way rises, band
Carry out the rising of system cost.
Summary of the invention
The purpose of the present invention is the control frameworks for existing airborne digital fuel oil TT&C system DSP and FPGA in volume
With the deficiency in terms of cost, a kind of small in size, at low cost, peripheral interface digitlization Fuel On Board TT&C system abundant is provided.
The present invention provides a kind of digitlization Fuel On Board TT&C systems to achieve the goals above.A kind of number of the invention
Word Fuel On Board TT&C system, including sensor signal processing circuit, communication drive circuit, photoelectric isolating circuit and oil mass letter
Number device, it is characterised in that: further include single-chip microcontroller STM32, the single-chip microcontroller STM32 electrical connection calculates fuel oil temperature for handling
Degree, oil mass, the sensor signal processing circuit of consumption and the communication drive circuit for being communicated with host computer, the single-chip microcontroller
The programmable logic device CPLD, the programmable logic device CPLD that STM32 connection controls input and output digital quantity are logical
Oil mass signal device and the transmission combustion of the full signal of full signal, oil oil to the greatest extent are adjusted in the zeroing for crossing photoelectric isolating circuit connection transmission Fuel On Board
Oil pump control valve signal.
Further, the sensor signal processing circuit includes the processes temperature signal electricity for receiving temperature sensor signal
Road, the fuel-quantity transducer signal processing circuit for receiving fuel-quantity transducer signal and the consumption sensor for receiving consumption sensor signal
Signal processing circuit.
Further, the communication drive circuit include be electrically connected single-chip microcontroller STM32 ARINC429 driving circuit,
RS232 driving circuit and RS422 driving circuit and controller area network driving circuit, JTAG download circuit and USB are logical
Believe driving circuit.
It further, further include power-switching circuit, power supply on 27V machine is converted to system and needed by the power-switching circuit
± the 15V and 5V wanted, by secondary power supply conversion circuit by 5V be converted to programmable logic device CPLD needs 3.3V power supply with
And the 4.5V pressure stabilizing that processes temperature signal circuit needs.
Further, it is connected between the single-chip microcontroller STM32 and programmable logic device CPLD using bus.
Further, data storage circuitry is including the use of FSMC extension external SRAM and memory FLASH.
Fuel measuring system has the following beneficial effects: the present invention compared with the prior art
It is small in size, it is at low cost.A kind of digitlization Fuel On Board TT&C system of the invention, is combined based on STM32 with CPLD
Framework is controlled, using the principle of digital electric bridge measurement fuel oil, can be placed in 120mm × 100mm × 50mm cabinet,
Under the premise of not influencing the measuring precision, whole system reduces 40% relative to fuel measuring system volume before, cost
It reduces.
Peripheral interface is abundant.A kind of digitlization Fuel On Board TT&C system of the invention, using being connect outside single-chip microcontroller STM32
The abundant advantage of mouth, such as: USB, controller area network, UART, SDIO, SPI.1 tunnel is used for by 3 USART interfaces
RS232 communication, 2 road RS422 communication；By SPI mouthfuls for the extraneous ARINC429 communication interface based on SPI communication agreement；Fortune
CAN communication interface is extended out with internal CAN interface and external CAN electrical level transferring chip.
Exploitation is simple.Single-chip microcontroller STM32 is developed using C language, while official provides bottom layer driving function, software development
Bottom layer driving function need to only be called and write control algolithm, the exploitation of programmable logic device CPLD uses Verilog language, with
The exploitation environment of FPGA is identical, but the timing inside programmable logic device CPLD, without being constrained, exploitation is simple.
Access is quick.Single-chip microcontroller STM32 is flexible by FSMC(Flexible static memory controller
Static memory controller) quick access of the realization to programmable logic device CPLD.In order to support to store in fuel measuring system
The fuel oil box curve of big data has extended out FLASH outside piece by FSMC and has been used to storage tank curve.
Strong real-time.The present invention controls the digital quantity of input and output using programmable logic device CPLD is primary,
It is mainly fuel oil that the oil of such as oil mass signal device input, which expires signal and oil signal, return to zero full signal, switching value output signal to the greatest extent,
The control valve signal of pump, all input/output signals are handled using Phototube Coupling.Single-chip microcontroller STM32 and programmable logic device
It is connected between CPLD using bus, can be improved the real-time of information interchange between the two in this way.Improve the airborne combustion of digitlization
The precision and the degree of automation of oily TT&C system test.
Detailed description of the invention
Fig. 1 is a kind of schematic block circuit diagram of digitlization Fuel On Board TT&C system of the invention.
Fig. 2 is the control framework functional block diagram that the STM32 of Fig. 1 is combined with CPLD.
Specific embodiment
Fig. 1 shows a kind of schematic block circuit diagram of digitlization Fuel On Board TT&C system of the invention.Of the invention one
Kind digitlization Fuel On Board TT&C system, a kind of digitlization Fuel On Board TT&C system, including sensor signal processing circuit, lead to
Believe driving circuit, photoelectric isolating circuit and oil mass signal device, it is characterised in that: further include single-chip microcontroller STM32, the single-chip microcontroller
STM32 is electrically connected the sensor signal processing circuit for handling calculating fuel oil temperature, oil mass, consumption and is used for logical with host computer
The communication drive circuit of news, the programmable logic device that the single-chip microcontroller STM32 connection controls input and output digital quantity
CPLD, the programmable logic device CPLD expire signal, oil by the zeroing tune that photoelectric isolating circuit connects transmission Fuel On Board
The oil mass signal device and transmission fuel oil pump control valve signal of the full signal of oil to the greatest extent.
Further, the sensor signal processing circuit includes the processes temperature signal electricity for receiving temperature sensor signal
Road, the fuel-quantity transducer signal processing circuit for receiving fuel-quantity transducer signal and the consumption sensor for receiving consumption sensor signal
Signal processing circuit.
Further, the communication drive circuit include be electrically connected single-chip microcontroller STM32 ARINC429 driving circuit,
RS232 driving circuit and RS422 driving circuit and controller area network driving circuit, JTAG download circuit and USB are logical
Believe driving circuit.
It further, further include power-switching circuit, power supply on 27V machine is converted to system and needed by the power-switching circuit
± the 15V and 5V wanted, by secondary power supply conversion circuit by 5V be converted to programmable logic device CPLD needs 3.3V power supply with
And the 4.5V pressure stabilizing that processes temperature signal circuit needs.
Further, it is connected between the single-chip microcontroller STM32 and programmable logic device CPLD using bus.
Further, data storage circuitry is including the use of FSMC extension external SRAM and memory FLASH.
Whole system is using single-chip microcontroller STM32 as control core, using programmable logic device CPLD to input and output digital quantity
It is controlled；Wherein: single-chip microcontroller STM32 connects programmable logic device CPLD, the static memory control of using flexible by bus
Device FSMC outer extension memory SRAM processed and flash memory FLASH carries out the storage of data.
Single-chip microcontroller STM32 has selected the STM32F103ZGT6 of ST company.The chip has the 32 of ARM CortexTM-M3
Position Embedded RISC architecture processor kernel, be integrated with the SRAM of the Flash and 96KB of 1MB, and be integrated with 12 A/D and
12 D/A on piece analogy signal processing units,.The product is integrated with 12 A/D and 12 D/A on piece simulation letters simultaneously
Number processing unit can be convenient and carry out on piece analog signal processing, in addition, chip additionally provides many external interfaces, such as:
USB, CAN, UART, SDIO, SPI etc..
Programmable logic device CPLD device has selected the XC95144XL and XC95144XL of Xilinx company.Above-mentioned CPLD device
Part chip is powered using 3.3V, identical as single-chip microcontroller STM32, is conducive to the power supply of simplified control device.Between pin and pin
Time in logical delay is 5ns, and for system maximum clock frequency up to 178MHz, there are 3200 utilogic doors in inside.
Referring to Fig.2, taking full advantage of the abundant advantage of single-chip microcontroller STM32 signal peripheral interface here.Single-chip microcontroller STM32 letter
Number peripheral interface has extended out 1 tunnel for the RS232 driving circuit that the serial ports of program is downloaded, and 2 tunnels are used for and host computer and ground are examined
The RS422 driving circuit that measurement equipment is communicated has extended out 1 road ARINC429 communication with 1 SPI mouthfuls of single-chip microcontroller STM32,
The 1 stand-by USB interface of road controller area network interface and 1 road is reserved.
In terms of signal processing, after carrying out pre-processing, processes temperature signal circuit is by temperature sensor analog signal
The analog-to-digital conversion module A/D for being input to the inside 12Bit of single-chip microcontroller STM32 is converted into digital data transmission to single-chip microcontroller STM32.
After the frequency signal of consumption sensor is carried out Signal Pretreatment early period by consumption sensor signal processing circuit, it is input to single-chip microcontroller
On the input capture pin of the timer TIM1 of STM32, frequency measurement is carried out to the input signal by timer TIM1, converses consumption
Magnitude；Fuel-quantity transducer signal processing circuit uses digital electric bridge, is converted to digital quantity warp by external D/A converter module D/A
Data bus interface is transferred to single-chip microcontroller STM32.
Claims (7)
1. a kind of digitlization Fuel On Board TT&C system, including sensor signal processing circuit, communication drive circuit, photoelectricity every
From circuit and oil mass signal device, it is characterised in that: further include single-chip microcontroller STM32, the single-chip microcontroller STM32 is electrically connected for locating
Reason calculates fuel oil temperature, oil mass, the sensor signal processing circuit of consumption and the communication drive circuit for communicating with host computer,
The programmable logic device CPLD that the single-chip microcontroller STM32 connection controls input and output digital quantity, described is programmable
Logic device CPLD adjusts the oil mass of the full signal of full signal, oil oil to the greatest extent to believe by the zeroing that photoelectric isolating circuit connects transmission Fuel On Board
Number device and transmission fuel oil pump control valve signal.
2. a kind of digitlization Fuel On Board TT&C system according to claim 1, it is characterised in that: the sensor letter
Number processing circuit includes that the processes temperature signal circuit for receiving temperature sensor signal, the oil mass for receiving fuel-quantity transducer signal pass
Sensor signal processing circuit and the consumption sensor signal processing circuit for receiving consumption sensor signal.
3. a kind of digitlization Fuel On Board TT&C system according to claim 2, it is characterised in that: the communication driving
Circuit includes ARINC429 driving circuit, RS232 driving circuit and the RS422 driving circuit for being electrically connected single-chip microcontroller STM32, and
Controller area network driving circuit, JTAG download circuit and usb communication driving circuit.
4. a kind of according to claim 1,2 or 3 any digitlization Fuel On Board TT&C system, it is characterised in that: also wrap
Power-switching circuit is included, power supply on 27V machine is converted to the ± 15V and 5V of system needs, passed through by the power-switching circuit
5V is converted to the 3.3V power supply and processes temperature signal circuit of programmable logic device CPLD needs by secondary power supply conversion circuit
The 4.5V pressure stabilizing needed.
5. a kind of digitlization Fuel On Board TT&C system according to claim 4, it is characterised in that: the single-chip microcontroller
It is connected between STM32 and programmable logic device CPLD using bus.
6. a kind of digitlization Fuel On Board TT&C system according to claim 4, it is characterised in that: data storage circuitry
Including the use of FSMC extension external SRAM and memory FLASH.
7. a kind of digitlization Fuel On Board TT&C system according to claim 5, it is characterised in that: data storage circuitry
Including the use of FSMC extension external SRAM and memory FLASH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711239212.5A CN109857048A (en) | 2017-11-30 | 2017-11-30 | Digitize Fuel On Board TT&C system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711239212.5A CN109857048A (en) | 2017-11-30 | 2017-11-30 | Digitize Fuel On Board TT&C system |
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| Publication Number | Publication Date |
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| CN109857048A true CN109857048A (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711239212.5A Pending CN109857048A (en) | 2017-11-30 | 2017-11-30 | Digitize Fuel On Board TT&C system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160611A (en) * | 2016-07-13 | 2016-11-23 | 中国科学院自动化研究所北仑科学艺术实验中心 | A kind of servomotor integrated control system based on STM32 and method |
| CN205787904U (en) * | 2016-07-05 | 2016-12-07 | 江苏省宿迁经贸高等职业技术学校 | Many rotor wing unmanned aerial vehicles flight control system based on STM32 |
| CN106200622A (en) * | 2016-08-18 | 2016-12-07 | 四川泛华航空仪表电器有限公司 | Fuel On Board observing and controlling online detection instrument |
| CN206039288U (en) * | 2016-08-18 | 2017-03-22 | 四川泛华航空仪表电器有限公司 | Fuel measurement control on -line measuring system |
| CN206505335U (en) * | 2017-02-28 | 2017-09-19 | 铁木真电子科技（昆山）有限公司 | A kind of temperature and humidity controller based on LPC1768 |
-
2017
- 2017-11-30 CN CN201711239212.5A patent/CN109857048A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205787904U (en) * | 2016-07-05 | 2016-12-07 | 江苏省宿迁经贸高等职业技术学校 | Many rotor wing unmanned aerial vehicles flight control system based on STM32 |
| CN106160611A (en) * | 2016-07-13 | 2016-11-23 | 中国科学院自动化研究所北仑科学艺术实验中心 | A kind of servomotor integrated control system based on STM32 and method |
| CN106200622A (en) * | 2016-08-18 | 2016-12-07 | 四川泛华航空仪表电器有限公司 | Fuel On Board observing and controlling online detection instrument |
| CN206039288U (en) * | 2016-08-18 | 2017-03-22 | 四川泛华航空仪表电器有限公司 | Fuel measurement control on -line measuring system |
| CN206505335U (en) * | 2017-02-28 | 2017-09-19 | 铁木真电子科技（昆山）有限公司 | A kind of temperature and humidity controller based on LPC1768 |
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Application publication date: 20190607 |