Device for connecting altitude controller to pilot-navigation system

FIELD: physics; navigation.

SUBSTANCE: invention relates to instrument making and can be used in aircraft navigation systems. The technical outcome is widening of functional capabilities. To achieve this outcome, the device includes a unit of initial information sensors, an analogue-to-digital converter (ADC), a computer, an alternating voltage source, a decoder, conversion channels, a register, a digital-to-analogue converter (DAC) and a power amplifier.

EFFECT: device enables converting digital information on the current values of angles of position of the aircraft to analogue signals, proportional to their sine or cosine.

1 dwg

 

The invention relates to an aircraft, in particular to the orientation units.

Known unit orientation course system [1], containing the sensors of the primary information, the analog-to-digital Converter, a computing machine.

The disadvantage of this device is the lack of output signals proportional to the sine and cosine of the current values of the angles.

Known block orientation [2], comprising a sensor unit of the first information, consisting of three accelerometers, three angular velocity sensors, a three-component magnetometer, inverter-based analog-to-digital conversion, a computing machine with an external interface.

The disadvantage of this device is its limited application because of the impossibility of connecting the indicator device, made on the sine-cosine transformer.

The claimed invention is directed to the extension of functionality.

This object is achieved in that in the device to enable the section orientation in flight-navigation complex containing the sensor unit of the primary information, is connected through an analog-to-digital Converter (ADC) to an automatic data processing machine according to the invention additionally introduced a source of alternating voltage, the decoder and six channels of conversion on the tion, each of which contains a power amplifier, digital to analog Converter (DAC), a register, a data input which is connected to the bus interface of the computer, the output is connected to the digital inputs of the DAC, the input reference voltage which is connected to a source of alternating voltage, and the output to the input of the power amplifier whose output is the output device, the input of the decoder connected to the bus interface of the computer, and outputs to the address inputs of the registers of each channel.

Significant differences between the proposed device is the introduction of six channels of conversion that converts the digital code into analog signals proportional to the sine and cosine of the current value of angle along three orthogonal axes.

When such inclusion occurs converting the digital information about the current value of the angles in analog signals proportional to the sine and cosine. These signals are required for dial gauge angle made by rotating sine-cosine transformer-receiver.

The present invention is illustrated in the drawing, which shows a structural diagram of the device containing the block 1 of the sensors of the primary information, ADC 2, computer 3, source 4 AC voltage, the decoder 5, the channels 6-11 mo is increased, the register 12, the DAC 13, the amplifier 14 output.

Unit 1 sensor primary information connected via ADC 2 to the computer 3, the bus interface which is connected to the input of the decoder 5, the outputs of which are connected to address inputs of the registers 12, the data inputs are connected to the bus interface of the computer 3. In each channel 6-11 to the output of register 12 is connected to the digital inputs of the DAC 13, the input reference voltage which is connected to the source 4 AC voltage, and the output to the input of the power amplifier 14 whose output is the output device.

The device operates as follows.

Unit 1 sensor primary information gives the current values of acceleration, angular rate, magnetic field of the Earth in the form of analog electrical signals by the ADC 2 is converted into a digital code received at a computing machine 3, where the computation of the sine and cosine of the current value of angle along three orthogonal axes. These digital codes, proportional to the sine and cosine of the current value of the angle, are issued to the bus interface and written to the registers 12 of each channel conversion on respective addresses generated by the decoder 5. Digital code register 12 is supplied to the digital inputs of the DAC 13, which, using a variable reference voltage source of the ICA 4 AC voltage, converts this code into an alternating voltage whose value is proportional to the sine and cosine of the current value of the angle. These signals are amplified by amplifier 14 of the power received at the output device and can be used to control any device, made on the sine-cosine rotary transformer, for example analog indicator angle.

Thus, generation of signals proportional to the sine and cosine of the current value of the angle extends the functionality of the proposed device.

The proposed device is used in the block orientation to control the sine-cosine rotary transformer arrow indicators corner.

Sources of information

1. U.S. patent No. 4347730, CL 73/1E 1982

2. Jubilee XV St. Petersburg international conference on integrated navigation systems. The collection of materials of the St. Petersburg 2008, str. Compensation for magnetic deviation of the integrated system backup devices, Vimala, Duvail (prototype).

The device to turn on the unit orientation in flight-navigation complex containing the sensor unit of the primary information, is connected through an analog-to-digital Converter to an automatic data processing machine, characterized in that it additionally introduced the AC voltage is tion, decoder and six channels of conversion, each of which contains a power amplifier, digital to analog Converter (DAC), a register, a data input which is connected to the bus interface of the computer, the output is connected to the digital inputs of the DAC, the input reference voltage which is connected to a source of alternating voltage, and the output to the input of the power amplifier whose output is the output device, the input of the decoder connected to the bus interface of the computer, and outputs to the address inputs of the registers of each channel.



 

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