Device for connecting altitude controller of integrated system of backup devices to pilot-navigation system

FIELD: physics; navigation.

SUBSTANCE: invention relates to instrument making particularly to aircraft navigation devices. To achieve the given result, the device includes a unit of inertial initial information sensors, a three-component magnetometre, an analogue-to-digital converter (ADC), a computer, a reference voltage source, an analogue inverter, a signaling device, three control channels, a protection device and an analogue switch. The device also includes a test-control of the magnetometre by applying direct voltage across its input from the reference voltage source. The magnetometre changes its output signal, from the value of which working capacity of the device is determined.

EFFECT: increased reliability.

1 dwg

 

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

Known unit orientation course system [1], containing the gyrocompass, magnetic induction sensor, an analog-to-digital Converter, a computing machine.

The disadvantage of this device is the lack of test-control magnetic induction sensor.

Known block orientation [2], comprising a sensor unit of the first information, consisting of three accelerometers, three angular velocity sensors, three-component magnetometer, inverter-based analog-to-digital Converter (ADC), a computing machine.

The disadvantage of this device is the lack of test-control three-component magnetometer, which reduces reliability.

The claimed invention is directed to improving the reliability of the device.

This object is achieved in that the device for the unit, the orientation of the integrated system backup devices in flight-navigation complex containing block inertial sensors of the primary information and the three-component magnetometer, is connected through an analog-to-digital Converter to the external bus interface of a computing machine according to the invention additionally introduced a source of reference voltage, an analog inverter, signalization, connected to the output of the computing machine, and three control channels, each of which contains a protection device and an analog switch, a digital input which is connected to the internal bus interface of the computer, the first analog input connected to the output of the analog inverter, whose input is connected to the reference voltage and the second analog input of the analog switch, the output of which is connected through a protection device to the input of the three-component magnetometer.

Significant differences between the proposed device is the introduction of test-control by submitting to the input of a three-component magnetometer constant voltage from the voltage reference. While the magnetometer changes its output signal, the magnitude of which can be judged on its performance, which increases the reliability of the device.

The present invention is illustrated in the drawing, which shows a structural diagram of the device containing the block 1 of the inertial sensors of the primary information, a three-component magnetometer 2, ADC 3, computer 4, the source 5 of the reference voltage, the analog inverter 6, a detector 7, three channels 8-10 control device 11 protection, the analog switch 12.

Block 1 of the inertial sensors of the primary information and the three-component mA is sitomer 2 is connected via ADC 3 to the external bus interface of the computer 4, to the internal bus interface which is connected in each channel 8-10 digital input analog switch 12, the first analog input of which is connected to the analog output of the inverter 6, the inlet of which is connected to the source 5 of the reference voltage and the second analog input of the analog switch 12, the output of which is connected through the device 11 protection to the input of the three-component magnetometer 2, the detector 7 is connected to the output of the computer 4.

The device operates as follows.

Block 1 of the inertial sensors of the primary information and the three-component magnetometer 2 given the current values of acceleration, angular rate, magnetic field of the Earth in the form of analog electrical signals by the ADC 3 is converted into a digital code received at a computing machine 4, where the computation of the values of the navigation parameters. The internal bus interface of the computer 4 in each of the channels 8-10 to the digital input of the analog switch 12 comes numeric code, which can be connected to positive or negative reference voltage through the device 11 protection on the input three-component magnetometer 2, which starts to give a test analog signal through the ADC 3 computer 4. If the magnitude of this signal is and match the expected value, this indicates normal operation of the device and a signal is generated health, which is issued by the warning device 7, if not match, then the condition is removed and the detector 7 indicates failure.

The source 5 of the reference voltage generates a voltage of one polarity, and to get the voltage of the other polarity, provides an analog inverter 6. Due to the fact that the line of communication between the three-component magnetometer 2 and ADC 3 is of considerable length, to reduce noise induced on it, provided by the device 5 protection.

The proposed device is used in the block orientation of the integrated system backup devices.

Sources of information

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

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

Device for the unit, the orientation of the integrated system backup devices in flight-navigation complex containing block inertial sensors of the primary information and the three-component magnetometer, is connected through an analog-to-digital Converter to the external bus interface Vici the calculating machine, characterized in that it additionally introduced a source of reference voltage, an analog inverter, the alarm device is connected to the output of the computing machine, and three control channels, each of which contains a protection device and an analog switch, a digital input which is connected to the internal bus interface of the computer, the first analog input connected to the output of the analog inverter, whose input is connected to the reference voltage and the second analog input of the analog switch, the output of which is connected through a protection device to the input of the three-component magnetometer.



 

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