CN2867295Y - Portable air navigation computing instrument - Google Patents

Abstract

The utility model belongs to an air navigation calculating instrument and specifically relates to a portable air navigation calculator. It solves the problems of navigation ruler used in flight training, general aviation flight and navigation teaching, such as inconvenient operation, low accuracy and frequent failure. It comprises a microprocessor as its core, a display, a display control module, an input unit, a JIAG interface, and a microprocessor memory. Programs for calculating navigational data are stored in the microprocessor memory, parameters are input by the keyboard, and the calculation results are showed on the display. Compared with prior arts, the utility model has simple structure, convenient operation and carrying, high accuracy, automatic calculation performance, and visual data display. It is widely used for flight training, general aviation flight of Small aircraft and navigation teaching.

Description

Portable avigation calculating instrument

Technical field

The utility model relates to a kind of avigation computing equipment, particularly a kind of portable avigation calculating instrument of being convenient to operate.

Background technology

The calculating of navigating is the core content of aeronavigation, and only grasping navigates calculates, and could lay a good foundation for the study of aircraft handling and other course.Particularly in the middle of training flight and general flight, owing to lack homer, the pilot must oneself finish various navigators and calculate.In the preparatory stage and aerial implementation phase of directly navigating of flight, and during the mission program design, all need the calculating of navigating.Because the real-time of avigation,, not only require fast, and require to calculate accurately carrying out various navigators when calculating.And the training flight and the general flight of present domestic military and civilian's boat, all calculate with slipstick, not only computing velocity is slow, and precision is also not high, occur easily wrong chi type is misread the human error of data, increased aircrew's work load in the middle of invisible, under the situation of single solo flight, even may influence controlling owing to need both hands to draw chi to calculate to aircraft.For this reason, the student will take much time and energy is grasped some specific conditions that navigate in calculating, because the chi algorithm belongs to mechanical calculations, the student is generally reflected difficulty of learning and forgotten easily.In learning process, the situation of " can calculate today, and just forget tomorrow " usually appears.In order to struggle with forgeing, the teacher will take much time on the classroom and energy carries out the calculating and the exercise of slipstick, so that allow the student form numeracy skills, this has not only increased unnecessary learning burden, has also wasted learning time.

The utility model content

The purpose of this utility model be the pilot for student and baby plane provide a kind of simple in structure, be convenient to operate and carry, the portable avigation calculating instrument of computational accuracy height, intuitive display automatically.

The purpose of this utility model realizes by following technical proposals:

Portable avigation calculating instrument, this calculating instrument includes display, display control module, microprocessor, input media and jtag interface, and Portable DC power supply, as long-acting battery, display is connected with display control module, microprocessor is connected with display control module, input media, jtag interface respectively, and jtag interface is used for debugging, downloads and fuse bit is set.

Above-mentioned microprocessor contains storer and register, and this storer is non-volatile, comprising:

1, the In-System Programmable Flash of 32K byte, erasing and writing life: 10,000 times

2, in-system programming is realized by Boot program on the sheet in the optional Boot code area that has independent locking bit

3, the EEPROM of 1024 bytes, erasing and writing life: 100,000 times

4,2K byte on-chip SRAM

Can programme to realize the encryption of user program to locking bit.

Above-mentioned display is a LCD, and the dot matrix number is 128 * 64.

Above-mentioned input media is a keyboard.

The button of described keyboard is arranged with 5 row, 4 row.

Above-mentioned store memory contains the program of calculating navigational information, comprises aerial real time data and ground preparation data such as calculating radius of turn, calculating desired heading.

The beneficial effects of the utility model are, the input of employing keyboard, liquid crystal display directly shows, the program that is stored in the microprocessor is transferred in navigator's calculating of large amount of complex to be carried out, make the pilot only just correlation parameter can be imported calculating instrument and directly draw navigational information with a hand, and need with the hands draw chi to calculate before need not resembling, like that not only data are not directly perceived, precision is not high yet, and easily make mistakes, owing to the hands drawing chi to calculate, the part pilot loses the danger that aircraft is controlled before more having avoided, and this calculating instrument is simple in structure, and is easy to carry and use.As seen, adopt the utility model of said structure, compare with the existing chi that draws, have simple in structure, be convenient to operation and carry, have High Precision Automatic computing function, can intuitively show the advantage of the navigational information of calculating.Can be used for pilot's navigator's foundation training, flight training and air traffic controller, navigator's teaching of mission program designer and the daily flight of baby plane, also can be used as the standby computing equipment of navigator of other aircraft.

Description of drawings

Fig. 1 is a structured flowchart of the present utility model;

Fig. 2 is the utility model microprocessor portion pin line synoptic diagram;

Fig. 3 is the utility model keyboard line synoptic diagram;

Fig. 4 is the utility model display control module line synoptic diagram;

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further described.

As shown in Figure 1, the utility model comprises microprocessor, display, display control module, input media, jtag interface, also include the battery as power supply, microprocessor is connected with display control module, input media, jtag interface respectively, and display control module is connected with display.Wherein, that microprocessor adopts is ATmega32L, and principal feature is as follows:

● 8 AVR of high-performance, low-power consumption ^Microprocessor

● advanced risc architecture

Article-131, instruction, be the single clock period most of instruction times

-32 8 general purpose working registers

-full quiescent operation

-when working in 16MHz performance up to 16MIPS

The hardware multiplier of-two clock period of need

● non-volatile program and data-carrier store

The In-System Programmable Flash of-32K byte, erasing and writing life: 10,000 times

-have an optional Boot code area of independent locking bit, realize in-system programming by Boot program on the sheet, real read while write operation

The EEPROM of-1024 bytes, erasing and writing life: 100,000 times

-2K byte on-chip SRAM

-can programme to realize the encryption of user program to locking bit

● jtag interface (with IEEE 1149.1 operating suchs)

-meet the boundary-scan function of JTAG standard

Debug function in the sheet of-support expansion

-by the programming of jtag interface realization to Flash, EEPROM, fuse bit and locking bit

● the peripheral hardware characteristics

-two 8 bit timing device/counters with independent pre-divider and comparator function

-one 16 bit timing device/counter with pre-divider, comparing function and capture function

-have a real-time counter RTC of separate oscillators

-four-way PWM

● particular processing device characteristics

-electrification reset and programmable detection of power loss

RC oscillator through demarcating in-the sheet

In-the sheet/the outer interrupt source of sheet

-6 kinds of sleep patterns: the Standby pattern of idle pulley, ADC squelch pattern, battery saving mode, power-down mode, Standby pattern and expansion

● I/O and encapsulation

-32 programmable I/O mouths

-44 pin TQFP encapsulation

● operating voltage

-ATmega32L：2.7-5.5V

● speed class

-ATmega32L：0-8MHz

● ATmega32L is at 1MHz, 3V, the power consumption in the time of 25 ℃

-normal mode: 1.1mA

-idle pulley: 0.35mA

-power-down mode:＜1 μ A

The external line of the part of microprocessor is listed as reading/control line of the 3rd row with PA0～PA3 as the 0th of keyboard as shown in Figure 2; PB0～PB4 as keyboard the 0th the row to the 4th the row reading/control line, constitute one 4 * 5 matrix keyboard.With external interrupt INT0 is that 11 pins receive keyboard interrupt.PD3, PD4 are used separately as data, the clock line of Liquid Crystal Module; The command sign of PD5 Liquid Crystal Module; PD6 makes the control line that resets of Liquid Crystal Module; PD7 does the sheet choosing of Liquid Crystal Module.TCK, TMS, TDO, TDI are used for connecting the JTAG emulator.Select internal clocking for use, therefore need not external clock.

The part line of keyboard as shown in Figure 3, wherein KBROW0～KBROW4 is connected with the PB0～PB4 of microprocessor respectively; KBCOL0～KBCOL3 is connected with the PA0～PA3 of microprocessor respectively, KBint is the keyboard interrupt pin, be connected with 11 pins of microprocessor, keyboard adopts the down trigger mode to obtain input information, when key is pressed, keyboard interrupts to the microprocessor application, scans button by processor then, obtains key assignments.

That display control module adopts is MOBI2006, adopts serial communication.The line of its part pin as shown in Figure 4, wherein CS1, RES, SCL, SI, A0 are respectively chip select line, liquid crystal reset line, serial time clock line, serial data line, data/order markings, 17, the SCL of 16 pins, SDA are connected with 12,13 pins of microprocessor respectively, VCC among Fig. 2, Fig. 4 is a power pins, the positive pole that connects power supply, GND connects the negative pole of power supply.20,19,18 pins of display control module are connected with 16,15,14 pins of microprocessor respectively.

Jtag interface is connected with microprocessor, can download by external emulator, and debugs, and the fuse bit of protecting is set.

Claims (5)

1, portable avigation calculating instrument, it is characterized in that: this calculating instrument includes display, display control module, microprocessor, input media and jtag interface, display is connected with display control module, and microprocessor is connected with display control module, input media, jtag interface respectively.

2, portable avigation calculating instrument as claimed in claim 1, it is characterized in that: microprocessor contains storer and register.

3, portable avigation calculating instrument as claimed in claim 1, it is characterized in that: display is a LCD.

4, portable avigation calculating instrument as claimed in claim 1, it is characterized in that: input media is a keyboard.

5, portable avigation calculating instrument as claimed in claim 4 is characterized in that: the button of described keyboard is arranged with 5 row, 4 row.

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