RU2377501C1 - Device for connecting altitude controller to pilot-navigation system - Google Patents

Abstract

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.

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Description

The invention relates to aircraft, in particular to orientation blocks.

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

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

A known orientation block [2], comprising a block of primary information sensors, consisting of three accelerometers, three angular velocity sensors, a three-component magnetometer, a converter based on analog-to-digital conversion, a computer with an external interface.

The disadvantage of this device is its limited use due to the inability to connect to it indicator devices made on a sine-cosine transformer.

The claimed invention is aimed at expanding functionality.

The problem is achieved in that in the device for turning on the orientation unit in the flight-navigation complex containing the primary information sensor block connected via an analog-to-digital converter (ADC) to the computer, according to the invention, an alternating voltage source, a decoder and six conversion channels are additionally introduced each of which contains a power amplifier, a digital-to-analog converter (DAC), a register, the data input of which is connected to the interface bus of a computer, the output is connected to the digital inputs of the DAC, the input of the reference voltage of which is connected to an AC voltage source, and the output to the input of the power amplifier, the output of which is the output of the device, the decoder input is connected to the interface bus of the computer, and the outputs are to the address inputs of the registers of each channel.

Significant differences of the proposed device include the introduction of six conversion channels into it, which convert the digital code into analog signals proportional to the sine and cosine of the current angle value along three orthogonal axes.

With this inclusion, digital information about the current value of the angles is converted to analog signals proportional to their sine and cosine. These signals are necessary for an angle dial indicator made on a rotating sine-cosine transformer-receiver.

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

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

The device operates as follows.

Unit 1 of the primary information sensors gives the current values of acceleration, angular velocity, magnitude of the Earth’s magnetic field in the form of analog electrical signals, which are converted using ADC 2 into a digital code supplied to computer 3, where the sine and cosine of the current angle value are calculated in three orthogonal axes. These digital codes proportional to the sine and cosine of the current angle value are output to the interface bus and are written from it to the registers 12 of each conversion channel at the corresponding addresses formed by the decoder 5. The digital code from the registers 12 is fed to the digital inputs of the DAC 13, which, using the variable The reference voltage of the AC voltage source 4 converts this code into AC voltage, the magnitude of which is proportional to the sine and cosine of the current angle value. These signals are amplified by a power amplifier 14, fed to the output of the device, and can be used to control any device made on a sine-cosine rotating transformer, for example, an arrow angle indicator.

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

The proposed device is used in the orientation unit for controlling a sine-cosine rotating transformer of turn indicators of the angle.

Information sources

1. US patent No. 4347730, cl. 73 / 1E 1982

2. Anniversary XV St. Petersburg International Conference on Integrated Navigation Systems. Collection of materials St. Petersburg 2008, p. 263. Compensation of magnetic deviation of an integrated system of backup devices, V.M. Samoilov, D.V. Svyazhin (prototype).

Claims (1)

A device for including an orientation unit in a flight-navigation complex containing a block of primary information sensors connected via an analog-to-digital converter to a computer, characterized in that an alternating voltage source, a decoder and six conversion channels are additionally introduced into it, each of which contains an amplifier power, digital-to-analog converter (DAC), a register whose data input is connected to the computer interface bus, the output is connected to the digital inputs of the DAC, input d reference voltage which is connected to an AC voltage source, and an output - to the input of the power amplifier, whose output is the output device, the input of the decoder is connected to a computer interface bus, and outputs - to the address inputs of the registers of each channel.

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