Sensing system and sensing information determination method applicable to same

Abstract

The invention provides a sensing system and a sensing information determination method applicable to the same. The sensing system comprises a sensing device and a sensing information determination device. The sensing device comprises an RC circuit, a signal monitoring circuit, a counting circuit and a crystal oscillator, wherein the RC circuit is formed by connecting a sensitive resistor and a capacitor in series, one end of the RC circuit is connected to a controlled switch, and the other end of the RC circuit is grounded; the controlled switch switches between preset voltage and a ground wire; the signal monitoring circuit is used for monitoring reset signals outputted in a charging period of the RC circuit; and the counting circuit is used for counting the period of clock signals in a non-reset period. The sensing information determination device comprises a control unit and a sensing information determination unit, wherein the control unit is used for monitoring voltage outputted by the RC circuit in a capacitor charging period and enabling a capacitor to discharge when the monitored capacitor is fully charged; and the sensing information determination unit is used for calculating sensing information corresponding to a periodic number provided by the counting circuit in a discharging period according to a pre-calibrated periodic number related with the measuring range. The sensing system provided by the invention effectively simplifies the hardware and reduces the computation burden.

Description

Technical field [0001] The present invention relates to the field of sensors, in particular to a sensing system and an applicable sensing information determination method. Background technique [0002] A sensor is a detection device that can transform the sensed information into an electrical signal or other required forms of information output according to a certain rule. As the components in the sensor may be affected by the measured environment, there are problems such as inaccurate output signals. Therefore, in the design, a calibration circuit is built into the sensor to eliminate the above-mentioned interference. This leads to complex hardware circuits and calculation methods in the sensor. [0003] For example, temperature sensors not only include measuring devices for measuring temperature changes, but also devices for calibrating clock signal generators. In the test process, the calibration device and the measuring device need to be measured separately to calculate the ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a sensing system and an applicable sensing information determination method, which are used to solve the problem that the hardware circuits and calculation methods in the sensor in the prior art are too complicated

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