Reconfigurable multi-mode sensor interface circuit

Abstract

The invention relates to the technical field of interface circuits, and discloses a reconfigurable multi-mode sensor interface circuit which comprises a reconfigurable measurement circuit, the input end of the reconfigurable measurement circuit is connected with a connection interface, and the output end of the reconfigurable measurement circuit is connected with one end of a baseline compensation circuit. The other end of the baseline compensation circuit is connected with the input end of the reconfigurable measurement circuit, the connection interface is connected with a sensor, and the reconfigurable measurement circuit is used for controlling and reconstructing the two measurement circuits through a switch according to the output type of the sensor and converting the two measurement circuits into voltage output in a unified mode. A first measuring circuit corresponds to a sensor of which the output type is resistance / voltage / current, a second measuring circuit corresponds to a sensor of which the output type is capacitance, and the baseline compensation circuit is used for performing resistance compensation on the first measuring circuit and performing capacitance compensation on the second measuring circuit. The error of a measurement result is compensated by additionally arranging the resistor and the capacitor, so that the error of the measurement result of the reconfigurable measurement circuit is reduced. According to the method, the structure is simple, the practicality is high, cost is low, and the method is suitable for popularization.

Description

technical field [0001] The invention relates to the technical field of data analysis, in particular to a reconfigurable multi-mode sensor interface circuit. Background technique [0002] Reconfigurable multi-modal technology enables the system to dynamically reconfigure software and hardware systems during operation. It has the advantages of high resource utilization, low power consumption, strong flexibility, and self-adaptive functions. It has a wide range of applications in various fields. Application prospect. In recent years, sensor application systems, as one of the core parts of the modern Internet of Things (IoT), have flourished and are widely used in various electronic devices, environmental monitoring, and smart city creation. [0003] Sensors detect physical, chemical and biological information, and express their final output as electrical signals or electrical convertible forms. The sensor interface circuit is responsible for measuring the output of these senso...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a reconfigurable multi-mode sensor interface circuit, which solves the problem that the existing sensor interface circuit amplifies a certain signal, and other signals cannot be directly multiplexed, and has poor versatility.

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