Multi-channel variable frequency signal acquisition system and method

Abstract

The invention relates to a multi-channel variable frequency signal acquisition system. The system comprises an industrial personal computer and a signal disconnection module, wherein the industrial personal computer is internally embedded with a plurality of high-speed signal acquisition cards and low-speed signal acquisition cards, and the industrial personal computer can configure signal acquisition frequencies of the high-speed signal acquisition cards and the low-speed signal acquisition cards; the signal disconnection module is provided with a plurality of bridging signal input ports, a high-speed signal output port and a low-speed signal output port; each high-speed signal output port is connected to a signal acquisition channel of the high-speed signal acquisition card; each low-speed signal output port is connected to a signal acquisition channel of the low-speed signal acquisition card; and each bridging signal input port can be connected to the output end of a sensor, and the sensor is a voltage output sensor or a current output sensor and can be connected with the high-speed signal output port or the low-speed signal output port through a bridging wire. In addition, the invention relates to a signal acquisition method implemented based on the multi-channel variable frequency signal acquisition system.

Description

technical field [0001] The application belongs to the technical field of aircraft hydraulic system ground test signal acquisition design, and in particular relates to a multi-channel variable frequency signal acquisition system and a method thereof. Background technique [0002] The ground test of the aircraft hydraulic system involves the collection of signals such as flow, temperature, pressure, speed, and torque of the aircraft hydraulic system. With the development of technology, the complexity of the aircraft hydraulic system has greatly increased, and the number of signal parts that need to be collected It also greatly increases, and there are following defects in collecting this part of the signal with the current technical solution: [0003] 1) The signal acquisition channel is limited, which cannot meet the needs of a large number of signal acquisition; [0004] 2) The signal acquisition based on the sensor involves a voltage output sensor whose output signal is a ...

AI Technical Summary

Problems solved by technology

[0003] 1) The signal acquisition channel is limited, which cannot meet the needs of a large number of signal acquisition;

[0004] 2) The signal acquisition based on the sensor involves a voltage output sensor whose output signal is a voltage signal and a current output sensor whose output signal is a current signal. When collecting the current signal output by the current output sensor, it is necessary to build an external conditioning circuit to Current signal conditioning is used to collect voltage signals, and when changing and configuring different types of sensors, the circuit needs to be changed frequently;

[0005] 3) The acquisition frequency required by each signal is different, and the acquisition channel can only be configured as high-speed acquisition or low-speed acquisition, and high-speed acquisition and low-speed acquisition cannot be performed at the same time

Images