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A helicopter model rotor rotation signal acquisition device

A helicopter model, rotating signal technology, applied in the direction of aircraft component testing, etc., can solve the problems of signal pollution, acquisition equipment installation, submersion, etc., to avoid signal attenuation and coupling capacitance, and improve accuracy.

Active Publication Date: 2018-02-23
CHINA HELICOPTER RES & DEV INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional helicopter model rotor tests are usually limited by the size of the hub, large overload centrifugal force, and dynamic balance. Conventional acquisition equipment cannot be installed on the hub, but such as: tie rod load, blade flapping load, blade shimmy Weak signals at the microvolt level such as loads are transmitted to the remote ground acquisition equipment through slip rings and long wires. Due to the signal attenuation and coupling capacitance in the transmission of slip rings and long wires, and the interference by the strong electromagnetic field of the power system during transmission , the signals measured by ground acquisition equipment are often polluted or completely submerged in interference signals and cannot be used

Method used

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  • A helicopter model rotor rotation signal acquisition device
  • A helicopter model rotor rotation signal acquisition device
  • A helicopter model rotor rotation signal acquisition device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 As shown, a helicopter model rotor rotation signal acquisition device includes, from top to bottom, a data acquisition and transmission module 2, a signal conditioning module 3 and a battery module 4, and the three modules are all in the shape of a round cake, wherein the data acquisition and transmission module The external dimension is φ140mm (diameter)×22mm (length), and the weight is 340 grams. The external dimension of the signal conditioning module is φ140mm (diameter)×35mm (length), and the weight is 450 grams. The external dimension of the battery module is φ140mm (diameter)×31mm (length), weight is 550 grams.

[0026] An antenna 5 is installed on the upper surface of the data acquisition and transmitting module 2, a signal input connector 7 protrudes from the center of the lower surface, and a signal output connector 15 is recessed in the center of the upper surface of the signal conditioning module 3, and the signal output connector 15 is connect...

Embodiment 2

[0036] Similar to Embodiment 1, the difference is that there are three screw holes near the edges of the data acquisition and transmission module 2, the signal conditioning module 3 and the battery module 4, and the data acquisition and transmission module, the signal conditioning module and the signal conditioning module are connected by long bolts 1 The module and the battery module are connected in series and fixed. The bolts are φ8mm (diameter) × 90mm (length). They are used to run through the entire helicopter model rotor rotation signal acquisition device. The weight is 80 grams. There are 3 pieces in total, which are evenly arranged at 120°.

[0037]The device is installed on the hub of the model rotor, as close as possible to the weak signal sources of the microvolt level such as the rod load, blade flapping load, and blade shimmy load, and then completes the power supply, weak signal conditioning, data acquisition and monitoring of the device by itself. Wireless transm...

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Abstract

The invention relates to a helicopter model rotor rotation signal acquisition device, belonging to the field of helicopter model rotor tests, comprising a data acquisition and transmission module (2), a signal conditioning module (3) and a battery module (4), external signals are passed through the signal conditioning module (3) ) amplification and filtering, and then digital-to-analog conversion and transmission by the data acquisition and transmission module (2). The three modules are connected by signal wires and power wires, and fixed by long bolts, and complete device power supply, weak signal conditioning and data acquisition by itself. And wireless transmission, thus effectively avoiding the problem of signal attenuation and coupling capacitance in the transmission of slip rings and long wires, and the data failure caused by the interference of the strong electromagnetic field of the power system during transmission, which can effectively improve the extremely weak rotor of the helicopter model. Accuracy of signal measurements.

Description

technical field [0001] The invention relates to the field of helicopter model rotor tests, in particular to a helicopter model signal acquisition device. Background technique [0002] Helicopter model rotor rotation signal acquisition is an important technology in the helicopter model rotor test, and it is the premise to accurately obtain microvolt-level weak rotation signals such as model blade tie rod load, blade flapping load, and blade shimmy load. [0003] Conventional helicopter model rotor tests are usually limited by the size of the hub, large overload centrifugal force, and dynamic balance. Conventional acquisition equipment cannot be installed on the hub, but such as: tie rod load, blade flapping load, blade shimmy Weak signals at the microvolt level such as loads are transmitted to the remote ground acquisition equipment through slip rings and long wires. Due to the signal attenuation and coupling capacitance in the transmission of slip rings and long wires, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64F5/60
Inventor 刘正江陈焕孙伟陈卫星金小强邓建军李新民王江华
Owner CHINA HELICOPTER RES & DEV INST
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