Atmosphere data computer based on Kalman filtering algorithm and implementing method of atmosphere data computer

Abstract

The invention discloses an atmosphere data computer based on a Kalman filtering algorithm and an implementing method of the atmosphere data computer. The computer comprises a sensor module, a time sequence control module and a digital signal processing module. The sensor module comprises a digital pressure sensor and an analog temperature sensor. The time sequence control module communicates with the digital signal processing module through controlling a time sequence signal. The digital signal processing module is connected with the time sequence control module through an address bus and a data bus to finish data transmission. The method includes the steps that initialization is performed; an interrupt signal is transmitted; whether the interrupt signal is received or not is judged; data are received; whether temperature data exceed the range or not is judged; the data are preprocessed; atmosphere data are calculated; Kalman filtering is performed; the data and fault codes are transmitted; whether the data and the fault codes are received or not is judged. The atmosphere data computer has the advantages of being high in precision, small in error, good in stability and suitable for sudden changes of the barometric height and can serve as an airborne device to be placed on an airplane.

Description

technical field [0001] The invention belongs to the technical field of computers, and further relates to an air data computer based on a Kalman filter algorithm and an implementation method thereof in the technical field of avionics. The invention can use a small amount of original parameters such as static pressure data, total pressure data, and temperature data measured by sensors to provide a large number of parameters related to atmospheric data for the aircraft cockpit and guide the pilot to operate the aircraft. Background technique [0002] In the field of avionics technology, the altitude, airspeed and other related information calculated by the air data computer are the key parameters required by the aircraft display system, so they have been widely used. Atmospheric data computers currently used in China have disadvantages such as low precision, large errors, and long data processing time. [0003] The patent application "An Atmospheric Data Computer and Its Reali...

AI Technical Summary

Problems solved by technology

The disadvantage of the implementation method disclosed in this patent application is that only one set of temperature sensor coefficients is used, and it cannot be corrected according to changes in the ambient temperature; it cannot be corrected when there is a sudden change in the pressure altitude

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