Comprehensive audio processing tester

An audio processing and tester technology, applied in the field of helicopter test, can solve the problems of rough test method, low accuracy, and complicated use of large-scale drag table equipment, and achieve the effect of intuitive display, convenient operation and easy operation.

Inactive Publication Date: 2014-05-28
HARBIN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the rough test method, low precision and complicated use of large-scale dragging table equipment, a device that can simulate the moving table to drive the sensor through digital signals is invented, which makes the test work more convenient, stable and high-precision.

Method used

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Embodiment Construction

[0021] The invention is composed of four parts: a power supply circuit, a rotational speed signal simulation circuit, an engine alarm signal simulation circuit and an alarm detection circuit. Similar to the previous design, the engine alarm signal detection and gong signal output functions are added, and the sound system is designed to simulate the fault alarm grounding signal and convert the gong signal.

[0022] 1. Power circuit

[0023] The power circuit is composed of a power switch S1, an AC / DC power module, and a current limiting resistor R1. The power switch S1 wire is connected in series between the 220V AC input and the AC / DC power module, and the output 28V DC is connected to L and A of J1.

[0024] 2. Speed ​​signal analog circuit

[0025] It consists of a circuit power switch S1, a current limiting resistor R2, and a frequency module. The power switch S1 and the resistor R2 are connected in series between the 220V AC output and the frequency module, and the outp...

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Abstract

The invention belongs to the technical field of helicopter test, and especially relates to a comprehensive audio processing tester. The tester is composed of four parts: a power supply circuit, an analog rotation speed signal circuit, an analog engine alarm signal circuit and an alarm detection circuit. The power supply circuit adopts standard 220VCA input, outputs direct-current power after internal conversion, and provides working power for the analog rotation speed signal circuit, the analog engine alarm signal circuit and a comprehensive audio processor. The analog rotation speed signal circuit can output a signal with certain amplitude and adjustable frequency through a control circuit so as to simulate an aircraft rotor rotation speed signal. The analog engine alarm signal circuit is used for generating an analog engine alarm signal. The alarm detection circuit detects three channels of alarm signals output by the comprehensive audio processor after the comprehensive audio processor receives and processes an analog rotation speed signal and an engine alarm signal. Function detection on the comprehensive audio processor can be effectively realized, and finished products before installation are ensured to comply with the relevant standards.

Description

technical field [0001] The invention belongs to the technical field of helicopter testing, in particular to a comprehensive audio processing tester Background technique [0002] The integrated audio processor is an electromechanical device that monitors the rotor speed in the working state of the helicopter. It compares the frequency signal of the rotor speed sensor with the set value of its own system, and outputs an overspeed or underspeed alarm signal. The airborne finished product, the existing production technology uses the drag table to drive the rotor speed magnetic sensor and the simple wiring method for testing, the accuracy and process methods cannot meet the calibration work of this part. Contents of the invention [0003] The technical problem to be solved in the present invention: [0004] In order to solve the rough and low accuracy of the existing test methods and the complicated use of large-scale dragging table equipment, a device that can simulate the mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P21/02
Inventor 王立松赵志远王相东张轶群
Owner HARBIN
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