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Analog accelerometer output signal transmission device

An accelerometer and transmission device technology, applied in directions such as navigation through velocity/acceleration measurement, can solve problems such as inaccurate signal sampling, and achieve the effect of improving sampling accuracy

Inactive Publication Date: 2013-11-13
西安应用光学研究所
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of inaccurate signal sampling caused by the accelerometer signal being susceptible to external electromagnetic interference during the transmission process, and to provide a transmission device that enhances the anti-interference ability of the analog accelerometer output signal

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  • Analog accelerometer output signal transmission device
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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0014] according to figure 1 As shown, the preferred embodiment of the present invention is directed to a transmission device for an analog accelerometer output signal output as a current signal. The device includes four parts: a power supply, a voltage follower circuit, a differential processing circuit and a twisted pair.

[0015] The voltage follower circuit is composed of a first resistor R1 and a first operational amplifier N1. The first resistor R1 is an accelerometer sampling resistor. One end is connected to the positive input terminal of the first operational amplifier N1, and the other end is connected to the power supply ground. The resistance value Depending on the use range of the accelerometer, the positive power terminal of the first operational amplifier N1 is connected to the positive output terminal of the power sup...

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Abstract

The invention discloses an analog accelerometer output signal transmission device and belongs to the field of analog signal transmission. The analog accelerometer output signal transmission device is directly integrated on an accelerometer, and an accelerometer output signal is directly converted into a differential voltage signal through a voltage following circuit and a differential processing circuit and is then output to a sampling module through a twisted-pair. According to the analog accelerometer output signal transmission device, the problem that an electromagnetic interference signal is easily introduced in the transmission process of the accelerometer output signal is solved, and the sampling precision of the analog accelerometer output signal is improved.

Description

technical field [0001] The invention belongs to the field of analog signal transmission, and mainly relates to a transmission device for an output signal of an analog accelerometer, in particular to a transmission device for an output signal of an accelerometer in an inertial navigation system. Background technique [0002] The inertial navigation system uses accelerometers and gyroscopes to sense the instantaneous changes in the acceleration and angular velocity of the carrier. The output signals of the accelerometers and gyroscopes are collected through the sampling module and sent to the navigation computer. The navigation computer can obtain the attitude of the carrier according to the navigation algorithm. , speed, position and other information. The transmission accuracy of accelerometer and gyroscope data will seriously affect the overall performance of the inertial navigation system. [0003] The electromagnetic interference signal in the environment where the inert...

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Application Information

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IPC IPC(8): G01C21/16
Inventor 康臻马忠孝张建峰郭栓运许开銮陈颖易科张夏疆杨萌薛媛元朱建军王本国陈红康颋婷李颖娟
Owner 西安应用光学研究所
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