Navigation and interface computer based on dual-DSP and CPLD

A computer and interface technology, applied in the field of navigation and interface computers based on dual DSP and CPLD, can solve the problems of difficulty in meeting the integration of system units at the same time, difficulty in stable and reliable navigation, and limited external interfaces of the main control chip, and achieve high reliability. , The effect of wide application and strong portability

Inactive Publication Date: 2015-07-08
BEIHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the data acquisition, navigation calculation, and data transmission in this type of navigation computer are all completed by a single DSP, and it is difficult to complete the complex calculation of navigation (especially integrated navigation) stably and reliably. In addition, the external interface of the main control chip is limited, so it is difficult At the same time, it meets the integration between various system units with different data formats from the carrier in practical applications

Method used

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  • Navigation and interface computer based on dual-DSP and CPLD
  • Navigation and interface computer based on dual-DSP and CPLD
  • Navigation and interface computer based on dual-DSP and CPLD

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Embodiment Construction

[0027] The method of the present invention will be described in detail below in combination with specific embodiments.

[0028] Such as figure 1 Shown is a block diagram of the circuit structure of the present invention. The circuit structure of the present invention mainly includes DSP1 module, DSP2 module, CPLD module, dual-port RAM module, Ethernet interface module, MIL-STD-1553B interface module, ARINC-429 interface module, extended RS-422 interface module.

[0029] Described DSP1 module (1) is interconnected with dual-port RAM module (4) by address bus 1 and data bus 1, realizes the communication with DSP2 module (2); Links to each other with gyroscope, accumulator by RS-422 serial bus, By sending synchronous pulses to the gyro and the accumulator, the data of the gyro accumulator is latched, and at the same time, the data of the angle measuring device read by the DSP2 module (2) is also latched; through the EMAC / MDIO module inside the DSP1 module (1) and the Ethernet in...

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Abstract

The invention discloses a navigation and interface computer based on dual-DSP and CPLD. The navigation and interface computer is applied to a rotary inertial navigation system constructed by a gyroscope taking RS-422 as the output, an accelerometer and an angular measurement device taking quadrature coding pulse as the output as well as other inertial navigation systems. The navigation and interface computer mainly comprises a DSP1 module, a DSP2 module, a CPLD module, a dual-port RAM module, an Ethernet interface module, a MIL-STD-1553B interface module, an ARINC-429 interface module and an expanded RS-422 interface module. The DSP1 module is mainly used for synchronous acquisition of inertial sensors and synchronous reading of the signal of the angular measurement device; the DSP2 module is mainly used for coordinated communication of the external MIL-STD-1553B, ARINC-429 and expanded RS-422; and the CPLD module is mainly used for signal acquisition of the angular measurement device and assistance of the DSP2 module. The navigation and interface computer disclosed by the invention is compact in circuit structure and high in expandability and can be widely applied to various inertial navigation systems.

Description

technical field [0001] The invention relates to a navigation and interface computer based on a dual digital signal processor (Digital Signal Processing, DSP) and a complex programmable logic device (Complex Programmable Logic Device, CPLD), which belongs to the field of inertial navigation system navigation computers and is suitable for RS Rotary inertial navigation systems and other inertial navigation systems constructed with gyroscopes as output, accumulators and angle measuring devices with quadrature coded pulses as output, especially suitable for standard aviation buses MIL-STD-1553B and ARINC-429 Airborne equipment for interface communication. Background technique [0002] With the continuous improvement of the carrier's requirements for the accuracy of the navigation system, the rotary inertial navigation system based on the rotary modulation theory has been developed rapidly. The rotary inertial navigation system uses motors and other actuators to periodically rota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20
CPCG01C21/20G01C21/16
Inventor 王蕾张谦王玮高鹏宇刘增军
Owner BEIHANG UNIV
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