Seismic Acquisition System and Sensor Based on Low Power Mems Sensor

Abstract

The invention belongs to the field of geological exploration, and specifically relates to a seismic acquisition system and sensor based on a low-power MEMS sensor, aiming to solve the problem that the existing seismic wave acquisition technology cannot take into account high precision and low energy consumption when using the MEMS sensor. The invention includes: the MEMS sensor receives the seismic wave signal, and outputs the MEMS sensor electrical signal; the common-mode voltage adjustment module adjusts the MEMS sensor signal to the common-mode voltage input range of the readout circuit, and obtains the low-voltage MEMS sensor signal; the readout circuit reads out The electric signal of the low-voltage MEMS sensor; the power supply module provides high power supply voltage to the MEMS sensor and common mode voltage adjustment module, and provides low power supply voltage to the readout circuit and feedback circuit. The invention uses a single power supply for power supply, ensures the detection accuracy of the MEMS sensor through the high voltage, and reduces the power consumption of the entire seismic acquisition system through the low voltage supply to the readout circuit.

Description

technical field [0001] The invention belongs to the field of geological exploration, and specifically relates to a seismic acquisition system and a sensor based on a low-power MEMS sensor. Background technique [0002] In geological exploration, it is usually necessary to continuously collect seismic wave signals for a long time, and MEMS sensors are commonly used sensors for seismic wave acquisition. [0003] Most of the existing MEMS sensor architectures are powered by a single high power supply voltage or positive and negative dual power supply voltages. This kind of circuit is difficult to achieve low power consumption, which limits the scope of application of MEMS sensors. Applications with low power requirements. In addition, in order to meet low power consumption, low power supply voltage is used for power supply in most cases, but the low power supply voltage limits the range and accuracy of MEMS sensors. Therefore, based on the application requirements of single p...

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Problems solved by technology

[0004] In order to solve the above problems in the prior art, that is, the existing seismic wave acquisition technology cannot take into account the problems of high precision, low energy consumption and high stability when using MEMS sensors, the present invention proposes a seismic acquisition based on low power consumption MEMS sensors A system, the system comprising: a MEMS header module, a common-mode voltage adjustment module, a readout circuit, a feedback circuit and a power supply module;

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